Mercury Repair Questions? Ask a Mechanic for Answers ASAP
Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.
I will need to know more about this wire harness to help diagnose this since I have no diagrams to match a bypassed LCM.
Is there a fuse in this circuit for the low beams and a fuse for the high beams?
What amp fuse is used and what gauge wiring?
Did you cut out the old wiring to the headlights or just splice in your new wiring?
So you have it wired something like this?
Okay so your constant powering the light and controlling the lights with a ground switch.
You shut the lights off, then the fuse immediately blows?
You said you can turn them off and on when cool. Cool meaning outside air temp or when the bulbs have not been on long and are cool?
Hello again Chris here,
So are you wanting me to have the post closed?
You said on the 12th you were going to send me a diagram.
Diagnosing a vehicle that has been rewired different than OEM diagrams I have to ask questions since yours is not like other vehicles. I have to know what you did to help you.
The wire gauge is fine, the fuse amp rating is fine. Are the bulb wattage higher than normal?
Is the wiring at the back of the headlight getting hot?
If you remove the ground from the switches does this stop the fuse failing.
I believe the contacts in the switches are warping under load and grounding out or the bulbs are drawing to many amps from high watt bulbs.