Ignition switch wiring - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Alan72Chevy · 05-28-2009, 10:48 PM

I'm putting in a new ignition switch and fixing some butchered wiring to it. It starts and runs fine. Just has some wires I don't know if they should be hooked up or what they go to. Here is what I have. Truck is a '72 Cheyenne C10.

Coming down to the switch, from the harness that goes over the gauge cluster, there are 6 wires:

Red - connected to "battery" on switch
Pink - connected to switch can't remember which terminal but works so I think is right
Purple - connected to switch can't remember which terminal but works so I think is right
Brown/Yellow - connected to "accessory" on switch
Brown - thick wire - disconnected not sure where it should go
Tan - thin wire -disconnected not sure where it should go

Now on the switch there are also some wires not connected

Terminal G1 has 2 green wires going to nothing
Terminal G2 has 2 brown wires going to nothing
and there is a second "battery" terminal with a red wire going to nothing.
There is a second brown wire coming from "accessory" where the brown/yellow connects, but second wire is not connected to anything

The ones in blue above are the ones in question. Any help is greatly appreciated! Let me know if anything is not clear or if I need to provide more info.

Thanks!
Alan

dan42 · 05-28-2009, 11:15 PM

There are a couple of pictures in the FAQ's of the fuse box and underdash wiring - take a look in there and see if you can find what you need. If not, just check back, and someone will get you straightened out. Good luck.

Alan72Chevy · 05-29-2009, 08:38 AM

Yeah, I have been searching the board for about 2 days, looking at the colored wiring diagrams, and searched the faq's at:
http://67-72chevytrucks.com/vboard/s...d.php?t=262547

So far I haven’t found an answer yet. Maybe I'm just overlooking it. The wiring diagrams show the colors going to the switch, but not what they go to. Someone has spliced a new connector for the switch and didn't reconnect everything.

Thanks

Hottrucks · 05-29-2009, 08:45 AM

http://www.geocities.com/chevroletc1070/wiringdias.html

here you go hope it helps

Alan72Chevy · 05-29-2009, 09:28 AM

Yes, that was the one I was missing. I think I have it figured out now.

Thanks!

05-28-2009, 10:48 PM	#1
Alan72Chevy Registered User Join Date: Aug 2008 Location: Pleasant Hill, MO Posts: 13	Ignition switch wiring I'm putting in a new ignition switch and fixing some butchered wiring to it. It starts and runs fine. Just has some wires I don't know if they should be hooked up or what they go to. Here is what I have. Truck is a '72 Cheyenne C10. Coming down to the switch, from the harness that goes over the gauge cluster, there are 6 wires: Red - connected to "battery" on switch Pink - connected to switch can't remember which terminal but works so I think is right Purple - connected to switch can't remember which terminal but works so I think is right Brown/Yellow - connected to "accessory" on switch Brown - thick wire - disconnected not sure where it should go Tan - thin wire -disconnected not sure where it should go Now on the switch there are also some wires not connected Terminal G1 has 2 green wires going to nothing Terminal G2 has 2 brown wires going to nothing and there is a second "battery" terminal with a red wire going to nothing. There is a second brown wire coming from "accessory" where the brown/yellow connects, but second wire is not connected to anything The ones in blue above are the ones in question. Any help is greatly appreciated! Let me know if anything is not clear or if I need to provide more info. Thanks! Alan __________________ 1972 Cheyenne - 350, auto, PS, PB, AC - Edelbrock intake, carb, cam, headers, air breather, K & N airfilter, dual exhaust, grant steering wheel 1984 Trans Am -335 stroker 1985 Trans Am - 305 H.O. 1992 Trans Am GTA - 1 of 226

05-28-2009, 11:15 PM	#2
dan42 Registered User Join Date: Feb 2007 Location: Cali Central Coast Posts: 5,191	Re: Ignition switch wiring There are a couple of pictures in the FAQ's of the fuse box and underdash wiring - take a look in there and see if you can find what you need. If not, just check back, and someone will get you straightened out. Good luck. __________________ '67 SWB Fleetside ZZ4/350/Tremec 5-speed/4link/Scott's IFS - and fun as heck! SOLD Click here to support the board Philippians 4: 6-7

05-29-2009, 08:38 AM	#3
Alan72Chevy Registered User Join Date: Aug 2008 Location: Pleasant Hill, MO Posts: 13	Re: Ignition switch wiring Yeah, I have been searching the board for about 2 days, looking at the colored wiring diagrams, and searched the faq's at: http://67-72chevytrucks.com/vboard/s...d.php?t=262547 So far I haven’t found an answer yet. Maybe I'm just overlooking it. The wiring diagrams show the colors going to the switch, but not what they go to. Someone has spliced a new connector for the switch and didn't reconnect everything. Thanks __________________ 1972 Cheyenne - 350, auto, PS, PB, AC - Edelbrock intake, carb, cam, headers, air breather, K & N airfilter, dual exhaust, grant steering wheel 1984 Trans Am -335 stroker 1985 Trans Am - 305 H.O. 1992 Trans Am GTA - 1 of 226

05-29-2009, 08:45 AM	#4
Hottrucks Redefining LowBudget Join Date: Mar 2009 Location: lebanon Cow Hampshire Posts: 4,538	Re: Ignition switch wiring http://www.geocities.com/chevroletc1070/wiringdias.html here you go hope it helps __________________ 1970 C10 CST fleetside 472 ....big dreams little cash... http://67-72chevytrucks.com/vboard/s...d.php?t=335721 SunShine Syndicate.. Mikes Sandwich Fair Run OCT 8th 2011 http://www.thesandwichfair.com/html/...auto_show.html

05-29-2009, 09:28 AM	#5
Alan72Chevy Registered User Join Date: Aug 2008 Location: Pleasant Hill, MO Posts: 13	Re: Ignition switch wiring Yes, that was the one I was missing. I think I have it figured out now. Thanks! __________________ 1972 Cheyenne - 350, auto, PS, PB, AC - Edelbrock intake, carb, cam, headers, air breather, K & N airfilter, dual exhaust, grant steering wheel 1984 Trans Am -335 stroker 1985 Trans Am - 305 H.O. 1992 Trans Am GTA - 1 of 226



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