dim passenger side head light

[rustyfan]

Hi I have a 67 coupe and my passenger side headlight is real dim. I tried a new pigtail and they are still dim. Also checked ground by voltage regulator it seems fine any ideas what i could do to fix this. Thanks

 

[TeamEntity]

see what voltage your getting at the good light and then the poor light. one should be lower. trace that one all the way to find out were the bad connection may be. most times in the headlight switch itself.

 

[rustyfan]

Thanks I will have to try that

 

[tx65coupe]

Is the bulb new. It may just be going out.

 

[runawayabc123]

You can also try swaping the pass/driver bulbs to see if it is the bulb or not.

 

[D.Hearne]

None of the above. You've got a bad ground to the head light.

 

[mustbereel]

None of the above. You've got a bad ground to the head light.

+1

 

[chris66dad]

I had the same problem.

I found the wiring on my 66 that goes from the drivers side to the passenger side above the radiator was hard and cracked. Replaced the old wiring with 12 gauge, installed relays and H4 bulbs and lights are very bright now

 

[rustyfan]

I checked to voltage between the two sides the dim side was .08 volts less switched lights and the one bulb seems to be going bad. Never saw a h-4 bulb just go dim. Problem fixed thanks: