Reverse Lights

[Atill93]

i've had several people tell me at red lights that they noticed my reverse lights are on while they're driving behind me. how do i fix this? what should i check?

i have a 1991 240sx coupe

thanks

[Croustibat]

Most likely you confused the neutral position switch and the reverse switch in your gearbox / wiring.

[Atill93]

i looked at it closer last night and i believe the wiring is switched between 4th gear and the reverse position. where can i find the gearbox wiring? I dont have a wiring diagram

[Croustibat]

there are only 2 sensors : neutral and reverse . And they are just switches. just switch the plugs and you are done (chances are the sensors have been switched as i believe the plugs are not the same)

[Atill93]

okay, where are the sensors?

[Touge180]

They both should be on the side on the transmission.

[Atill93]

thanks dude. i'll take a look at it tomorrow

[Atill93]

which wires do i need to switch to sort out my reverse lights?

[Bentleyness]

one closest to the engine

[Atill93]

simply switch the wires around?
its just the 4th gear and reverse position that i need to switch around

[zerodameaon]

There are more then two sensors. If you cant start your car after you swap these sensors around or can only do so in reverse that means that the issue is not in these sensors. You could have a short in the wiring for your reverse lights.

Here is a good pictures with labels.
Swap around 1 and 4 and see if that solves your issues.



EDIT: I reread your post and noticed they said its at red lights, is it only at reds? If so that for sure isn't those sensors and could be a short. That crappy bulb holder setup has a tendency to melt if you put to high wattage bulbs and all kinds of strange things happen.

[Atill93]

Wow, I'm reviving this thread almost 7 years later lol

so I just realized I never fixed my reverse light issue back in 2012

the reverse lights come on when I'm in 4th gear instead of reverse

do I just have the sensors plugged in wrong?

[Educated_Idiot]

Originally Posted by Atill93

Wow, I'm reviving this thread almost 7 years later lol

so I just realized I never fixed my reverse light issue back in 2012

the reverse lights come on when I'm in 4th gear instead of reverse

do I just have the sensors plugged in wrong?

It sounds like you have your reverse light circuit connected to your fourth gear switch. You may also have your fourth gear circuit wired to your reverse light switch. I can't remember for sure but I think the connectors for both of these switches are the same.

back from the dead, yet again.