headlight voltage

[brummmmsky]

I have been having some MAJOR issues with my 08 Edge... first problem is that my battery went dead and the Vista roof stopped working . Second issue im having is my headlight went out for no reason and when checking with a new lamp it still didnt work. after checking all fuses and finding none of them were blown, I checked voltage at the headlight harnesses and found the one that isnt working having 8.8 volts and the other side ( which is working having 12 volts... If anyone has any kind of info please let me know

[ablb]

It might be why your battery went dead.

 

What was your ground source for the 8.8 test?

 

I’m not sure how many volts it takes to start a 12v halogen bulb but 8 volts should get it going a little???

 

I used to say to my customers “If you take a bad light out and you put a bad light back in what do you get?”

You have a known GOOD bulb, move it to the suspected bad socket.

 

good luck

ab

[brummmmsky]

It might be why your battery went dead.

 

What was your ground source for the 8.8 test?

 

I’m not sure how many volts it takes to start a 12v halogen bulb but 8 volts should get it going a little???

 

I used to say to my customers “If you take a bad light out and you put a bad light back in what do you get?”

You have a known GOOD bulb, move it to the suspected bad socket.

 

good luck

ab

Yeah, I used a good lamp to test the other side- I tested the ground by using my battery positive and the ground at the socket thinking it might be a bad ground but got 12 volts + and reversing it and still getting 8.8 so its somewhere in the positive side of t

He wiring.... I'm not stopping till I find the electrical gremlin and when I do it will be posted !!