Head lamp Issues - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mygmctruck1 · 04-02-2020, 11:08 AM

This has me baffled.

I installed a premade LMC head lamp harness with relays for my new h4 head lamps.

The lights works fine before the install.

on low beams , the low beam is bright as it should be but the high beam is on also but dim ? Then if I switch to HIGN beam , the hi beam is bright as is should be and the low beam lamp is dim and it shouldn't be ?
In other words on low beams the high beam shouldn't be on at all but on H Beams both should be on bright but the low beam is dim.

What the H*** is going on ?

Cross wire ?

04-02-2020, 11:08 AM	#1
mygmctruck1 Registered User Join Date: Jun 2018 Location: Munising,Mi Posts: 360	Head lamp Issues This has me baffled. I installed a premade LMC head lamp harness with relays for my new h4 head lamps. The lights works fine before the install. on low beams , the low beam is bright as it should be but the high beam is on also but dim ? Then if I switch to HIGN beam , the hi beam is bright as is should be and the low beam lamp is dim and it shouldn't be ? In other words on low beams the high beam shouldn't be on at all but on H Beams both should be on bright but the low beam is dim. What the H*** is going on ? Cross wire ? Last edited by LockDoc; 04-03-2020 at 08:34 PM.



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