Generator swap to internally regulated alternator - The 1947 - Present Chevrolet & GMC Truck Message Board Network

62stepside longbox · 04-12-2016, 08:40 PM

I am in the process of replacing the generator on my 62 with an alternator. I believe it's a Delco remy 10si. I have already figured out the mounting but my question is about the wiring. On all of the 10si wiring diagrams there is a diode wired in between the terminal #1 and the ignition switch. Do I need a diode or will the charging light in the gauge cluster work as one? Thanks. Here are some pics of the alternator mounting brackets

62stepside longbox · 04-12-2016, 08:41 PM

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62stepside longbox · 04-12-2016, 08:42 PM

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**DPowers** · 04-12-2016, 09:47 PM

I believe you will find alot of info in the FAQ section.

jtrichard · 04-13-2016, 12:16 AM

With a light you do NOT need the diode

**Captainfab** · 04-13-2016, 12:20 AM

Also lots of info in the Electrical section of this forum.

62stepside longbox · 04-13-2016, 01:02 AM

Quote:

Originally Posted by DPowers

I believe you will find alot of info in the FAQ section.

Quote:

Originally Posted by Captainfab

Also lots of info in the Electrical section of this forum.

Yes the faq section has a very good write up on putting in a internally regulated alternator but there was nothing mentioned on diodes and it was being installed on a truck that came with an externally regulated alternator and mine has a generator so I wasn't sure.

62stepside longbox · 04-13-2016, 01:03 AM

Quote:

Originally Posted by jtrichard

With a light you do NOT need the diode

Thank you! Exactly the answer I was looking for.

chevy_mike · 04-13-2016, 10:55 AM

With a dash light (not LED but actual incandescent bulb) there is enough resistance to prevent the alt from back feeding the ignition and keep the engine running when you turn off the key. If you do not have a dash light, then using a diode will prevent this.

I am currently using the diode method in two vehicles and it works great.

62stepside longbox · 04-13-2016, 11:05 AM

Quote:

Originally Posted by chevy_mike

With a dash light (not LED but actual incandescent bulb) there is enough resistance to prevent the alt from back feeding the ignition and keep the engine running when you turn off the key. If you do not have a dash light, then using a diode will prevent this.

I am currently using the diode method in two vehicles and it works great.

Thanks mike, being that I allready have a light in the dash with no use I think I'll just use that. Is the light going to come on when the alternator is charging or when it's not charging?

jtrichard · 04-13-2016, 12:11 PM

The "GEN" light in the dash comes on when "A" the engine is not running (but key on) or "B" no output from ALT (with engine running)

chevy_mike · 04-13-2016, 02:57 PM

What jtrichard said ^^^^^^

62stepside longbox · 04-13-2016, 03:19 PM

Thank you guys this is exactly what I was looking for

04-12-2016, 08:41 PM	#2
62stepside longbox Registered User Join Date: Aug 2015 Location: Kelowna, B.C, Canada Posts: 1,747	Re: Generator swap to internally regulated alternator 02 Attached Images

04-12-2016, 08:42 PM	#3
62stepside longbox Registered User Join Date: Aug 2015 Location: Kelowna, B.C, Canada Posts: 1,747	Re: Generator swap to internally regulated alternator 03 Attached Images __________________ Nik...................____ 62 lwb c10 step-side 261 5 spd .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ my build thread. Sending unit solution

04-12-2016, 09:47 PM	#4
DPowers One foot in front of the other Join Date: Aug 2008 Location: Parrottsville, TN Posts: 5,443	Re: Generator swap to internally regulated alternator I believe you will find alot of info in the FAQ section. __________________ DP's 66 Build http://67-72chevytrucks.com/vboard/s...d.php?t=361556

04-13-2016, 12:16 AM	#5
jtrichard Registered User Join Date: Jun 2013 Location: joshua tree ca. Posts: 1,484	Re: Generator swap to internally regulated alternator With a light you do NOT need the diode

04-13-2016, 12:20 AM	#6
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Generator swap to internally regulated alternator Also lots of info in the Electrical section of this forum. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

04-12-2016, 08:40 PM	#1
62stepside longbox Registered User Join Date: Aug 2015 Location: Kelowna, B.C, Canada Posts: 1,747	Generator swap to internally regulated alternator I am in the process of replacing the generator on my 62 with an alternator. I believe it's a Delco remy 10si. I have already figured out the mounting but my question is about the wiring. On all of the 10si wiring diagrams there is a diode wired in between the terminal #1 and the ignition switch. Do I need a diode or will the charging light in the gauge cluster work as one? Thanks. Here are some pics of the alternator mounting brackets Attached Images

04-13-2016, 10:55 AM	#9
chevy_mike Never Ending Projects Join Date: Jul 2006 Location: San Diego, CA Posts: 3,836	Re: Generator swap to internally regulated alternator With a dash light (not LED but actual incandescent bulb) there is enough resistance to prevent the alt from back feeding the ignition and keep the engine running when you turn off the key. If you do not have a dash light, then using a diode will prevent this. I am currently using the diode method in two vehicles and it works great. __________________ . 1965 C10 Panel, Tiki Express http://www.67-72chevytrucks.com/vboa...d.php?t=506580 SOLD 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often...

04-13-2016, 12:11 PM	#11
jtrichard Registered User Join Date: Jun 2013 Location: joshua tree ca. Posts: 1,484	Re: Generator swap to internally regulated alternator The "GEN" light in the dash comes on when "A" the engine is not running (but key on) or "B" no output from ALT (with engine running)

04-13-2016, 02:57 PM	#12
chevy_mike Never Ending Projects Join Date: Jul 2006 Location: San Diego, CA Posts: 3,836	Re: Generator swap to internally regulated alternator What jtrichard said ^^^^^^ __________________ . 1965 C10 Panel, Tiki Express http://www.67-72chevytrucks.com/vboa...d.php?t=506580 SOLD 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often...

04-13-2016, 03:19 PM	#13
62stepside longbox Registered User Join Date: Aug 2015 Location: Kelowna, B.C, Canada Posts: 1,747	Re: Generator swap to internally regulated alternator Thank you guys this is exactly what I was looking for __________________ Nik...................____ 62 lwb c10 step-side 261 5 spd .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ my build thread. Sending unit solution

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