How do i find problem with wiring for headligts in a 2002 ford escort
You will need a basic voltmeter. The headlight wiring is very simple, with a directly-switched positive (+) line and a chassis negative (-) line being the only two connections to the headlights. The headlights are switched through the HEADLIGHT SWITCH and the HIGH BEAM SWITCH (unless you have automatic lighting, in which case they are additionally switched through a relay circuit).
First thing to check is continuity of the ground circuit by switching the voltmeter over to the OHMS setting, determining which connector at the headlight is supposed to be NEGATIVE (usually a black wire), and making sure that there is minimal resistance between the negative terminal and any chassis metal.
Then, using the VOLTS setting on the meter, starting at your headlight switch, you will need to check voltage in the circuit, with your lights switched ON, of course, to see where positive voltage is lost. Most likely culprits are burned fuse, bad light switch, or a burned wire connecting to the high beam switch.
Aug 12, 2014 |
2002 Ford Escort