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reverse lights come on with running lights...

Posted: December 16th, 2008, 7:28 am
by trafik1588
ok, here's the problem, i have a 92 mx-3 gs 5spd. i just got the car for $500 dollars so i was expecting some issues. i've pretty much fixed everything (water pump, timing belt, wheel bearing, sunroof, etc...)except for this problem. whenever i turn on my lights, the reverse lights come on too. could this be a short? or could it be a faulty reverse light switch? how can i test this? i keep finding articles with ppl who's lights wont come on, and they're no help to me. if anyone can help, i'll very much appreciate it. thanks

oh yeah, i have two bumper lights out on the right side cuz it was in a small fender bender, but i see no cut wires or anything.

Re: reverse lights come on with running lights...

Posted: December 16th, 2008, 8:51 am
by Ryan
Wow. I have no idea where to start.

The reverse switch is found beneath the gearbox, maybe take a peek at that. The tails are easy to take off, see whats going on back there. Maybe someone mixed up the bulbs? Do your running lights come on as well?

I do not know where the headlight relay is. I do not know where the reverse light relay is. Shameem is our wiring genius.

Re: reverse lights come on with running lights...

Posted: December 17th, 2008, 6:15 am
by trafik1588
ok, well ima start at the reverse switch. i looked at the lights already and see no prob. ill stay posted. thanx

Re: reverse lights come on with running lights...

Posted: January 3rd, 2009, 12:18 am
by Newfie_dan
the reverse sensor is located bottom of the trans has 2 wires connected to it. It unplugs and unscrews from the transmission. Use a multimeter first on continuity test once unplugged. With the trans in N you should not have any continuity between the 2 contacts and in R you should have continuity. To see if its shorted to a power source unplug the switch and see if the reverse lights still come on with your running lights. That way you have eliminated the b/u switch as the source of the problem. It can also be a faulty ground, it can try to ground itself back trough the reverse circuit. Are they illuminated dimly or brightly with the running lights?

Re: reverse lights come on with running lights...

Posted: January 22nd, 2012, 1:13 pm
by kulluminati777
mine are illuminated dimly when the car is on and they are LED bulbs...could that be the problem?