Need help hooking up gauge cluster with Tach - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Captkaos** · 11-10-2007, 11:04 PM

What year is the donor and what year is the current speedo? How is it not fitting?

BLE 'BURBAN · 11-10-2007, 11:10 PM

Ok here's the pics of how to change out the odometer on your speedo head unit to keep your actual accrued mileage accurate when swapping out from one factory speedo head to another factory speedo head.

DISCLAIMER.... This is ONLY intended for the procedure mentioned above and should not be used to "TURN BACK" your actual mileage on your vehicle. If you do so and get caught, you are on your own to suffer the consequences of your actions.

1. Remove the speedo from the housing.
Looking at the speedo from the bottom side (pic #2) you will see a small "L" shaped retaining clip on the inner left side. Using a small flat tip screwdriver, gently pry up on the top of the clip and remove it and set it aside where you won't loose it. (pic #3)
2. Slide the odometer to the left thus releasing the right side from the plastic housing. STOP HERE FOR NOW! DO NOT ATTEMPT TO REMOVE IT COMPLETELY YET AS YOU MAY DAMAGE IT.
3. Looking at the face of the speedo you will
see two(2) small screws (pic #1) Remove these and set them aside. I do not advise trying to remove the needle as you may end up snapping the shaft off in the process (Been there, Broke that Not Fun!)
4. Now with the face of the speedo loose you will have plenty of room to remove the odometer from the speedo head.
5. Be careful not to loose or damage the white lock plate (pics #4 & 5) on the backside of the odometer as this is what keeps the metal tabs in alignment and also keeps the whole odometer tight together. They tend to get fragile and brittle with age.
5. Reverse the process to reassemble everything back together. Good Luck and have fun!!!

1984Silverado4x4 · 11-11-2007, 01:31 PM

well as you can see in these pictures switching odometers around wont work.
the old odometer needs to have notches in the metal tabs to fit in the new speedo gauge

BLE 'BURBAN · 11-11-2007, 01:48 PM

Ok next thing to do is to CAREFULLY remove the white retainer piece from the odometer thenyou SHOULD be able to roll each tumbler around individually while GENTLY spreading them apart from one another holding in place the left side and rolling the right side. Try that.

1984Silverado4x4 · 11-11-2007, 03:11 PM

OK Ive got it now

Thanks BLE BURBAN

11-10-2007, 11:04 PM	#26
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: Need help hooking up gauge cluster with Tach What year is the donor and what year is the current speedo? How is it not fitting? __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

11-10-2007, 11:10 PM	#27
BLE 'BURBAN In the Forgotten far North. Join Date: Jul 2007 Location: Anchorage, Alaska Posts: 2,627	Re: Need help hooking up gauge cluster with Tach Ok here's the pics of how to change out the odometer on your speedo head unit to keep your actual accrued mileage accurate when swapping out from one factory speedo head to another factory speedo head. DISCLAIMER.... This is ONLY intended for the procedure mentioned above and should not be used to "TURN BACK" your actual mileage on your vehicle. If you do so and get caught, you are on your own to suffer the consequences of your actions. 1. Remove the speedo from the housing. Looking at the speedo from the bottom side (pic #2) you will see a small "L" shaped retaining clip on the inner left side. Using a small flat tip screwdriver, gently pry up on the top of the clip and remove it and set it aside where you won't loose it. (pic #3) 2. Slide the odometer to the left thus releasing the right side from the plastic housing. STOP HERE FOR NOW! DO NOT ATTEMPT TO REMOVE IT COMPLETELY YET AS YOU MAY DAMAGE IT. 3. Looking at the face of the speedo you will see two(2) small screws (pic #1) Remove these and set them aside. I do not advise trying to remove the needle as you may end up snapping the shaft off in the process (Been there, Broke that Not Fun!) 4. Now with the face of the speedo loose you will have plenty of room to remove the odometer from the speedo head. 5. Be careful not to loose or damage the white lock plate (pics #4 & 5) on the backside of the odometer as this is what keeps the metal tabs in alignment and also keeps the whole odometer tight together. They tend to get fragile and brittle with age. 5. Reverse the process to reassemble everything back together. Good Luck and have fun!!! Attached Images __________________ 1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade Last edited by BLE 'BURBAN; 11-10-2007 at 11:14 PM.

11-11-2007, 01:31 PM	#28
1984Silverado4x4 Registered User Join Date: Jul 2007 Location: Mount Horeb WI Posts: 179	Re: Need help hooking up gauge cluster with Tach well as you can see in these pictures switching odometers around wont work. the old odometer needs to have notches in the metal tabs to fit in the new speedo gauge Attached Images __________________ Its no disgrace being poor. Its just inconvenient.

11-11-2007, 01:48 PM	#29
BLE 'BURBAN In the Forgotten far North. Join Date: Jul 2007 Location: Anchorage, Alaska Posts: 2,627	Re: Need help hooking up gauge cluster with Tach Ok next thing to do is to CAREFULLY remove the white retainer piece from the odometer thenyou SHOULD be able to roll each tumbler around individually while GENTLY spreading them apart from one another holding in place the left side and rolling the right side. Try that. __________________ 1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade

11-11-2007, 03:11 PM	#30
1984Silverado4x4 Registered User Join Date: Jul 2007 Location: Mount Horeb WI Posts: 179	Re: Need help hooking up gauge cluster with Tach OK Ive got it now Thanks BLE BURBAN __________________ Its no disgrace being poor. Its just inconvenient.



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