The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Headlight relay upgrade...am I missing something here?? $$??

Andy4639 · 10-19-2010, 11:13 AM

The relay's can be bought at O-rileys for less than $5.00 a relay that's a 40 amp. Good for 4-55 watt bulbs. The schematic is general but it works.
Low beam:
wire from dimmer switch is hooked to 86 on relay.
87 goes to low beam of head light
85 is a ground
30 is the 12 volt power from battery.

High beam is wired the same. I jumpered my 12 volts off of the low beam.

Here is mine.

10-19-2010, 11:13 AM	#6
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Headlight relay upgrade...am I missing something here?? $$?? The relay's can be bought at O-rileys for less than $5.00 a relay that's a 40 amp. Good for 4-55 watt bulbs. The schematic is general but it works. Low beam: wire from dimmer switch is hooked to 86 on relay. 87 goes to low beam of head light 85 is a ground 30 is the 12 volt power from battery. High beam is wired the same. I jumpered my 12 volts off of the low beam. Here is mine. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.