Wiring diagram for headlight switch? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

prostreetC-10 · 01-01-2013, 02:01 AM

I'm going a custom gauge cluster and I'm not going to use the factory headlight switch. I need to know what wires control the marker/cruising lights and the headlights. I'm just going to run them off a toggle switch on a panel. I see the switch has a plug with numbered male ends on the switch. Can someone tell me what is what? Thanks!

*Mister-B* · 01-01-2013, 02:09 AM

Try this http://67-72chevytrucks.com/vboard/s...d.php?t=558016
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prostreetC-10 · 01-01-2013, 02:20 AM

I'm assuming the GMCs and Chevys are the same? Thanks for the link!

SS Tim · 01-01-2013, 06:04 AM

Also need to consider that the factory headlamp circuit breaker is part of the switch. So if you remove the switch there will be no circuit protection. Even if you are going to add headlamp relays you should plan on a fuse or circuit breaker on the control side.

*Mister-B* · 01-01-2013, 10:38 AM

Quote:

Originally Posted by prostreetC-10

I'm assuming the GMCs and Chevys are the same? Thanks for the link!

No problem, man. Chances are, GMC is the same as Chevy, but one of the few differences IS that the GMC has an extra set of headlights, so I don't know for sure. This should get you very close though. That, and following Tim's advice
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prostreetC-10 · 01-01-2013, 11:07 AM

Great points from both of you. I do realize about the fused part and that will be addressed. Thanks again.

68gmsee · 01-01-2013, 02:02 PM

Here's a GMC v8 schematic for engine compartment in case you need it.

01-01-2013, 02:01 AM	#1
prostreetC-10 My Carbon Footprint Join Date: Oct 2008 Location: Orygun Posts: 5,527	Wiring diagram for headlight switch? I'm going a custom gauge cluster and I'm not going to use the factory headlight switch. I need to know what wires control the marker/cruising lights and the headlights. I'm just going to run them off a toggle switch on a panel. I see the switch has a plug with numbered male ends on the switch. Can someone tell me what is what? Thanks! __________________ A quick "pedalfest" *Still getting loose (carb test)* 496 Initial fire up video!

01-01-2013, 02:09 AM	#2
Mister-B Account Suspended Join Date: Oct 2012 Location: Salt Lake City, Utah Posts: 3,331	Re: Wiring diagram for headlight switch? Try this http://67-72chevytrucks.com/vboard/s...d.php?t=558016 Posted via Mobile Device

01-01-2013, 02:20 AM	#3
prostreetC-10 My Carbon Footprint Join Date: Oct 2008 Location: Orygun Posts: 5,527	Re: Wiring diagram for headlight switch? I'm assuming the GMCs and Chevys are the same? Thanks for the link! __________________ A quick "pedalfest" *Still getting loose (carb test)* 496 Initial fire up video!

01-01-2013, 06:04 AM	#4
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: Wiring diagram for headlight switch? Also need to consider that the factory headlamp circuit breaker is part of the switch. So if you remove the switch there will be no circuit protection. Even if you are going to add headlamp relays you should plan on a fuse or circuit breaker on the control side. __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

01-01-2013, 11:07 AM	#6
prostreetC-10 My Carbon Footprint Join Date: Oct 2008 Location: Orygun Posts: 5,527	Re: Wiring diagram for headlight switch? Great points from both of you. I do realize about the fused part and that will be addressed. Thanks again. __________________ A quick "pedalfest" *Still getting loose (carb test)* 496 Initial fire up video!

01-01-2013, 02:02 PM	#7
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Wiring diagram for headlight switch? Here's a GMC v8 schematic for engine compartment in case you need it. Attached Images __________________ 68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...



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