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Old 10-12-2018, 10:53 AM   #1
focusedontheprize
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H4 Upgrade Relay for Quad Headlights?

I have a 1986 Chevrolet C30 with quad headlights and wanted to do the H4 upgrade. It looks like I ordered the wrong relay harness which is only setup for a dual headlights. I have been looking around and see that maybe LMC is the only company that offers a quad H4 relay kit.

Has anyone found any others they would recommend or if they used LMC - how did you like the quality? Thanks.
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Old 10-12-2018, 02:59 PM   #2
blindbug
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Re: H4 Upgrade Relay for Quad Headlights?

Quote:
Originally Posted by focusedontheprize View Post
I have a 1986 Chevrolet C30 with quad headlights and wanted to do the H4 upgrade. It looks like I ordered the wrong relay harness which is only setup for a dual headlights. I have been looking around and see that maybe LMC is the only company that offers a quad H4 relay kit.

Has anyone found any others they would recommend or if they used LMC - how did you like the quality? Thanks.
You can utilize the Dual Headlight harness to power all (4) of your lights... it involves (4) total splices... (2) for each hi beam light. You don't have to add additional relays or much additional wiring.

See this link and compare the diagram pictures to see the additional (4) wires that would be added:

http://www.73-87.com/7387garage/exte...ight_relay.htm

I would recommend buying (2) headlight harnesses for the hi-beams and then wiring them up via the diagram above. Should be a fairly simple procedure and not too expensive. Bonus points if you solder the connections and use heatshrink!

good luck!
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Old 10-13-2018, 05:46 PM   #3
Houston Ben
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Re: H4 Upgrade Relay for Quad Headlights?

Look up my post "Upgrade low beam headlights or replace with slyvania?" I did this to my 86 C10 and works awesome!
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Old 10-14-2018, 01:25 PM   #4
focusedontheprize
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Re: H4 Upgrade Relay for Quad Headlights?

Thanks everyone.

@blindbug - I end up ordering LMC's quad headlight harness so I wouldn't have to splice into them.

@Houston Ben - I had watched your thread, my only concern was the harness only ran to the top lights, I was looking to find a harness that attached all 4 headlights together. I end up order LMC's dual light setup and am going to put that in.
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