I bought new headlights off ebay. they use h4 bulbs. Put them in one side works the other side doesnt. I took them out put the old ones in one side is bright the other side is dim(it was like that but not as bad) but the center headlamps arnt turning on at all. When i put the highbeams on the outside bulbs get brighter and the inside ones do nothing.
If i try the new h4 headlamps one side works the other side doesnt and still no highbeams, but the high beam light stays on a slightly even when the highbeam switch is turned off.

Any ideas guys? Short something out maybe? I need to fix this asap and DO NOT want to wire up the headlights individually with pilot switches like I did in my other car.

 

check your ground wires. especially on the side that was dim.

 

I've posted this diagram at least ten times already. When will people figure out we have a search?



You should also get an H4 relay harness. You can make one pretty easy if ya don't wanna buy one.

 

Been seen and used those same diagrams before. I completely rewired my headlights on my project car wiring them with dist blocks 8 gauge wiring and pilot switches and a circuit breaker.

Helps with going from regular to h4 bulbs that is something im going to do when i put the new headlamps back in but for now...no one has yet to anwser why the highbeams dont come one at all.

The passenger side low beam is dim because its cracked/got water in it I think but im going to check the grounds again any way.

High beams anyone?

 

Are you 100% sure that you wired the lights correctly? If you notice in the diagram (top and middle pic) You have to move the wires around a bit? The adapter I had bought, I had to move the wires around.

 

Havnt actually touched any of the wiring in this car yet. Its stock and after trying the new lamps with no success i went back to the stockers and thats when I noticed the high beams stop turning on. Could I have blown a relay or something for the highbeams from putting the new lamps in without using the wire adapters?

Btw where are the headlight relays in a 85 mpfi 2.8? I checked all the fuses but that didnt seem to be the issue.