About the main electric systems of the car. Consider a different tag for radios and other such systems.

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8
votes
4answers
3k views

How to assess battery charge level and alternator performance?

What diagnostics can be done to to assess battery charge level? I'm interested both in one-off tests like can be done in car service and also continuous monitoring during normal use. Car panels ...
4
votes
1answer
4k views

How should the lights for a trailer be hooked up?

I have a tent trailer and the lights don't work right. It has a 4 wire connector to my car but one of the wires on the trailer connector was worn out and probably not working. So I got a new 4 prong ...
0
votes
1answer
51 views

1994 Tracker Emergency Brake

I have a problem with the emergency light ((!)) staying on, just started 2 days ago when I went over a speed bump, Brake fluid is full, I topped it up a month ago, the gas task was close to empty so I ...
3
votes
2answers
345 views

Trailer wiring corrosion

Every couple of years I find that the trailer wiring connector (7 pin) on the back of my truck doesn't work properly, causing the brake or turn signals on the trailer to not function. This is caused ...
0
votes
0answers
174 views

How do you locate a battery drain? [duplicate]

Possible Duplicate: Battery drains by itself when vehicle is parked (parasitic draw) Something is leaching current from my battery. Leaving it parked for a few days results in the battery ...
4
votes
2answers
2k views

Possible short in reverse lights on 2003 Nissan Frontier Pickup Truck

When I engage reverse on the manual transmission of my 2003 Nissan Frontier pickup truck, the reverse lights tend to sporadically turn on and off. I'm trying to figure out what path to take to ...
2
votes
2answers
485 views

What's the correct fusing for a headlight relay?

Summary of the situation: I have a 1975 Ford truck that suffered from the "Ford flashing headlight problem". The factory wiring uses 18ga wires over a very long path and through an under-rated ...