Need help with wiring stock temperature and vacuum gauges - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Green Monster · 03-31-2009, 08:04 PM

Excellent! So the temp gauge does not have a wire going to the back of the gauge, instead the signal is sent though the printed circuit, correct?

msgross · 03-31-2009, 08:06 PM

Quote:

Originally Posted by msgross

The green wire should be built into your main harnass that clips onto the back of your dash bezel. You "should" just need to hook up the printed circuit on the back to the new gauge. .

Quote:

Originally Posted by Green Monster

Excellent! So the temp gauge does not have a wire going to the back of the gauge, instead the signal is sent though the printed circuit, correct?

yep,

Green Monster · 03-31-2009, 08:57 PM

How does the vacuum hose attach to the vacuum gauge? I only have a gauge but don't know what type of hose to attach or how to attach the hose.

msgross · 03-31-2009, 09:46 PM

good question.. post some pics when you figure it out.. I have yet to mount mine as well... I'm think vacuum hose but not sure on the gauge connector...

**jaros44sr** · 04-01-2009, 08:47 AM

Just looked at mine, 1/8" copper tube and ferrule with the female locking nut. Just like your oil pressure gauge if you have a manual, comes off the block by the distributor and not electric

badpeanut · 04-01-2009, 08:05 PM

Quote:

Originally Posted by jaros44sr

Just looked at mine, 1/8" copper tube and ferrule with the female locking nut. Just like your oil pressure gauge if you have a manual, comes off the block by the distributor and not electric

IIRC the vacuum gauge fitting is larger (1/4"?) than the oil fitting (1/8"?).

**jaros44sr** · 04-02-2009, 05:37 AM

Quote:

Originally Posted by badpeanut

IIRC the vacuum gauge fitting is larger (1/4"?) than the oil fitting (1/8"?).

I could be wrong, I'll go look again

enaberif · 04-02-2009, 05:39 AM

vac gauge is just hooked up to the manifold vacuum source. May have to do some custom fitting.

**jaros44sr** · 04-02-2009, 07:04 AM

Looks to me it is a 1/8" tube, but it could be a 1/4" ferrule. I could measure if needed

seldomseen65 · 06-25-2009, 11:11 PM

OK guys it's my turn to ask for help, I'm sure there are a lot more younger guys than i am, that could help me out, my problem is my horn , everything else is OK, i went for a test run to check things out and i try to use my horn and nothing happened ,,i came back to the house and find out that the horn had been by passed, with a horn bottom,,why would any one do that and i have been trying to figure this out with out tearing the steering wheel apart ,, so give me some idea what i might have to do OK,,thanks ,,i hope i posted in the right area to ask for help ?
Larry

**jaros44sr** · 06-26-2009, 11:45 AM

Quote:

Originally Posted by seldomseen65

OK guys it's my turn to ask for help, I'm sure there are a lot more younger guys than i am, that could help me out, my problem is my horn , everything else is OK, i went for a test run to check things out and i try to use my horn and nothing happened ,,i came back to the house and find out that the horn had been by passed, with a horn bottom,,why would any one do that and i have been trying to figure this out with out tearing the steering wheel apart ,, so give me some idea what i might have to do OK,,thanks ,,i hope i posted in the right area to ask for help ?
Larry

I would repost this down on the Electrical section, or have a Mod. move it. Really smart guys down there and I'm sure one of them could help you out. I had a question for them and they even drew up a schematic for me to follow along

I'm electrically challenged, so I can't help

seldomseen65 · 06-26-2009, 05:51 PM

Quote:

Originally Posted by jaros44sr

I would repost this down on the Electrical section, or have a Mod. move it. Really smart guys down there and I'm sure one of them could help you out. I had a question for them and they even drew up a schematic for me to follow along

I'm electrically challenged, so I can't help

thanks jaros44sr; i'll five them a try and see if they can come up with a solution for me,

Green Monster · 03-08-2010, 08:59 PM

It's been a while but I finally got around to refurbishing my instrument cluster. Out is the hand throttle and aftermarket Sun Pro gauge. I installed a new bezel, lens, printed circuit, and tin along with the correct factory temp gauge with vacuum gauge. It looks awesome.

I was able to get the vacuum gauge to work by buying a brass adapter to attach a 1/4" barb to the back of the gauge. The adapter and 1/4" barb were threaded on with teflon tape. I used six feet of 1/4" vacuum line and ran it to a T that I installed about two inches from the vacuum line coming out of the rear of the intake manifold that leads to the AC canister. The gauge reads right down the center at "15" during idle and drops to "0" if I stab the throttle but bouces right back to "15". I guess that's what it should be doing?

I found a few cut wires behind the block wile under the hood. One wire on the passenger side and another on the driver side. Not suprising to me, the volt meter and temp gauge do not work. I installed a new temp sensor. I think the cut green wire I found needs to be connected to the temp sensor and that will resolve my temp gauge issue.

I'm not sure what I have to do to get the volt meter working. Any ideas?

Thanks,
John

**lks dcvn** · 03-08-2010, 11:46 PM

GM - do you have any pix of the new setup with the hookups under the hood - I have a vacuum gauge that I want to get hooked up this year at some point.

**jaros44sr** · 03-09-2010, 12:16 AM

Quote:

Originally Posted by Green Monster

It's been a while but I finally got around to refurbishing my instrument cluster. Out is the hand throttle and aftermarket Sun Pro gauge. I installed a new bezel, lens, printed circuit, and tin along with the correct factory temp gauge with vacuum gauge. It looks awesome.

I was able to get the vacuum gauge to work by buying a brass adapter to attach a 1/4" barb to the back of the gauge. The adapter and 1/4" barb were threaded on with teflon tape. I used six feet of 1/4" vacuum line and ran it to a T that I installed about two inches from the vacuum line coming out of the rear of the intake manifold that leads to the AC canister. The gauge reads right down the center at "15" during idle and drops to "0" if I stab the throttle but bouces right back to "15". I guess that's what it should be doing?

I found a few cut wires behind the block wile under the hood. One wire on the passenger side and another on the driver side. Not suprising to me, the volt meter and temp gauge do not work. I installed a new temp sensor. I think the cut green wire I found needs to be connected to the temp sensor and that will resolve my temp gauge issue.

I'm not sure what I have to do to get the volt meter working. Any ideas?

Thanks,
John

Good job John, glad it worked out for you. You're right on the green wire, I'll see if I can find the volt wire for you

John H. · 03-09-2010, 10:37 AM

There should be a brown/white wire from the junction block on the passenger fender. The small wire from the positive battery cable hooks on it. I think the other wire (brown) comes off the voltage regulator. Both of these wires go through the firewall at the bulk head and go into the back of the guage cluster like the temp. I might have the colors backward, but you can look at the diagram for a start.

Green Monster · 03-09-2010, 02:36 PM

I'll see if I can get some pix.

Thanks for the tips.

Jaros - If I can't get this corrected then can I stop by for some help? From your pictures, it looks like you have experience with wiring.

**jaros44sr** · 03-09-2010, 03:40 PM

[QUOTE=Green Monster;3849901

Jaros - If I can't get this corrected then can I stop by for some help? From your pictures, it looks like you have experience with wiring.[/QUOTE]

Sure anytime! But don't use that as a reason to visit...got my cell number? sposed to rain this weekend

Green Monster · 03-09-2010, 03:45 PM

Rain will stop me. GM is a fair weather vehicle only.

I don't have your cell number. Can you PM me with it?

**jaros44sr** · 03-09-2010, 04:47 PM

Quote:

Originally Posted by Green Monster

Rain will stop me. GM is a fair weather vehicle only.

I knew that

that's why I posted it up, but maybe Sunday

Tynee · 03-09-2010, 09:58 PM

Congrats, I bet it looks great.

**jaros44sr** · 03-09-2010, 10:02 PM

Green Monster · 03-10-2010, 09:55 AM

I'll get pictures up soon. I have an under hood picture and dash picture to share.

Green Monster · 03-23-2010, 04:57 PM

Jim (aka Jaros44sr) was gracious enough to host myself at his home on Sunday morning to help me get the stock temperature gauge wired up and operating again. Jim knows his wiring and wasted no time finding chopped up wiring under my hood and quickly identifying where it belongs and what it was for. The previous owner installed a new motor and aftermarket SunPro temp. Gauge. Jim supplied the correct advice, wire, connector, heat shrink tubing and crimping tools to help me get the job done right. Jim is both patient and knowledgeable. Great guy and super nice. Jim has a neat project Jimzer with a 67 Chevy pickup front clip he is working on. It was great to look at his project with the oak bed and to share my 72 Blazer with someone that REALLY appreciates it. Thanks again Jim!

Attached are photos of the vacuum gauge set up as requested.

Green Monster · 03-23-2010, 05:01 PM

One more.

03-31-2009, 08:04 PM	#26
Green Monster Registered User Join Date: Mar 2006 Location: Malvern, PA Posts: 951	Re: Need help with wiring stock temperature and vacuum gauges Excellent! So the temp gauge does not have a wire going to the back of the gauge, instead the signal is sent though the printed circuit, correct? __________________ Photo Gallery of 1972 K/5 Blazer CST

03-31-2009, 08:57 PM	#28
Green Monster Registered User Join Date: Mar 2006 Location: Malvern, PA Posts: 951	Re: Need help with wiring stock temperature and vacuum gauges How does the vacuum hose attach to the vacuum gauge? I only have a gauge but don't know what type of hose to attach or how to attach the hose. __________________ Photo Gallery of 1972 K/5 Blazer CST

03-31-2009, 09:46 PM	#29
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Need help with wiring stock temperature and vacuum gauges good question.. post some pics when you figure it out.. I have yet to mount mine as well... I'm think vacuum hose but not sure on the gauge connector... __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" Last edited by msgross; 03-31-2009 at 09:47 PM.

04-01-2009, 08:47 AM	#30
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,762	Re: Need help with wiring stock temperature and vacuum gauges Just looked at mine, 1/8" copper tube and ferrule with the female locking nut. Just like your oil pressure gauge if you have a manual, comes off the block by the distributor and not electric __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 04-01-2009 at 08:50 AM.

04-02-2009, 05:39 AM	#33
enaberif Registered User Join Date: Jan 2009 Location: Calgary, AB Posts: 1,181	Re: Need help with wiring stock temperature and vacuum gauges vac gauge is just hooked up to the manifold vacuum source. May have to do some custom fitting.

04-02-2009, 07:04 AM	#34
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,762	Re: Need help with wiring stock temperature and vacuum gauges Looks to me it is a 1/8" tube, but it could be a 1/4" ferrule. I could measure if needed __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 04-02-2009 at 07:05 AM.

06-25-2009, 11:11 PM	#35
seldomseen65 spirit rider66 Join Date: Oct 2008 Location: pahrump, nevada, in the bowels of the Mojave desert Posts: 291	Re: Need help with wiring stock temperature and vacuum gauges OK guys it's my turn to ask for help, I'm sure there are a lot more younger guys than i am, that could help me out, my problem is my horn , everything else is OK, i went for a test run to check things out and i try to use my horn and nothing happened ,,i came back to the house and find out that the horn had been by passed, with a horn bottom,,why would any one do that and i have been trying to figure this out with out tearing the steering wheel apart ,, so give me some idea what i might have to do OK,,thanks ,,i hope i posted in the right area to ask for help ? Larry __________________ :Chevy: If you don't run your own life,, some one else will. to our vets,, welcome home,, and thank you for your service.:Chevy: Last edited by seldomseen65; 06-25-2009 at 11:13 PM.

03-08-2010, 08:59 PM	#38
Green Monster Registered User Join Date: Mar 2006 Location: Malvern, PA Posts: 951	Re: Need help with wiring stock temperature and vacuum gauges It's been a while but I finally got around to refurbishing my instrument cluster. Out is the hand throttle and aftermarket Sun Pro gauge. I installed a new bezel, lens, printed circuit, and tin along with the correct factory temp gauge with vacuum gauge. It looks awesome. I was able to get the vacuum gauge to work by buying a brass adapter to attach a 1/4" barb to the back of the gauge. The adapter and 1/4" barb were threaded on with teflon tape. I used six feet of 1/4" vacuum line and ran it to a T that I installed about two inches from the vacuum line coming out of the rear of the intake manifold that leads to the AC canister. The gauge reads right down the center at "15" during idle and drops to "0" if I stab the throttle but bouces right back to "15". I guess that's what it should be doing? I found a few cut wires behind the block wile under the hood. One wire on the passenger side and another on the driver side. Not suprising to me, the volt meter and temp gauge do not work. I installed a new temp sensor. I think the cut green wire I found needs to be connected to the temp sensor and that will resolve my temp gauge issue. I'm not sure what I have to do to get the volt meter working. Any ideas? Thanks, John __________________ Photo Gallery of 1972 K/5 Blazer CST

03-08-2010, 11:46 PM	#39
lks dcvn Registered User Join Date: Jan 2007 Location: Columbus, Ohio Posts: 4,348	Re: Need help with wiring stock temperature and vacuum gauges GM - do you have any pix of the new setup with the hookups under the hood - I have a vacuum gauge that I want to get hooked up this year at some point.

03-09-2010, 10:37 AM	#41
John H. Registered User Join Date: Oct 2007 Location: Sammamish, WA Posts: 2,115	Re: Need help with wiring stock temperature and vacuum gauges There should be a brown/white wire from the junction block on the passenger fender. The small wire from the positive battery cable hooks on it. I think the other wire (brown) comes off the voltage regulator. Both of these wires go through the firewall at the bulk head and go into the back of the guage cluster like the temp. I might have the colors backward, but you can look at the diagram for a start.

03-09-2010, 02:36 PM	#42
Green Monster Registered User Join Date: Mar 2006 Location: Malvern, PA Posts: 951	Re: Need help with wiring stock temperature and vacuum gauges I'll see if I can get some pix. Thanks for the tips. Jaros - If I can't get this corrected then can I stop by for some help? From your pictures, it looks like you have experience with wiring. __________________ Photo Gallery of 1972 K/5 Blazer CST

03-09-2010, 03:40 PM	#43
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,762	Re: Need help with wiring stock temperature and vacuum gauges [QUOTE=Green Monster;3849901 Jaros - If I can't get this corrected then can I stop by for some help? From your pictures, it looks like you have experience with wiring.[/QUOTE] Sure anytime! But don't use that as a reason to visit...got my cell number? sposed to rain this weekend __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim

03-09-2010, 03:45 PM	#44
Green Monster Registered User Join Date: Mar 2006 Location: Malvern, PA Posts: 951	Re: Need help with wiring stock temperature and vacuum gauges Rain will stop me. GM is a fair weather vehicle only. I don't have your cell number. Can you PM me with it? __________________ Photo Gallery of 1972 K/5 Blazer CST

03-09-2010, 09:58 PM	#46
Tynee I miss this truck. Join Date: Dec 2001 Location: Lexington, KY U.S.A. Posts: 2,863	Re: Need help with wiring stock temperature and vacuum gauges Congrats, I bet it looks great. __________________ '07 GMC Acadia SLT. Sweet ride. '08 Crew Cab Z-71 short bed. Really like this truck A LOT.

03-09-2010, 10:02 PM	#47
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,762	Re: Need help with wiring stock temperature and vacuum gauges __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim



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03-10-2010, 09:55 AM	#48
Green Monster Registered User Join Date: Mar 2006 Location: Malvern, PA Posts: 951	Re: Need help with wiring stock temperature and vacuum gauges I'll get pictures up soon. I have an under hood picture and dash picture to share. __________________ Photo Gallery of 1972 K/5 Blazer CST

03-23-2010, 04:57 PM	#49
Green Monster Registered User Join Date: Mar 2006 Location: Malvern, PA Posts: 951	Re: Need help with wiring stock temperature and vacuum gauges Jim (aka Jaros44sr) was gracious enough to host myself at his home on Sunday morning to help me get the stock temperature gauge wired up and operating again. Jim knows his wiring and wasted no time finding chopped up wiring under my hood and quickly identifying where it belongs and what it was for. The previous owner installed a new motor and aftermarket SunPro temp. Gauge. Jim supplied the correct advice, wire, connector, heat shrink tubing and crimping tools to help me get the job done right. Jim is both patient and knowledgeable. Great guy and super nice. Jim has a neat project Jimzer with a 67 Chevy pickup front clip he is working on. It was great to look at his project with the oak bed and to share my 72 Blazer with someone that REALLY appreciates it. Thanks again Jim! Attached are photos of the vacuum gauge set up as requested. Attached Images __________________ Photo Gallery of 1972 K/5 Blazer CST

03-23-2010, 05:01 PM	#50
Green Monster Registered User Join Date: Mar 2006 Location: Malvern, PA Posts: 951	Re: Need help with wiring stock temperature and vacuum gauges One more. Attached Images __________________ Photo Gallery of 1972 K/5 Blazer CST

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