Backup lights
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Senior Member
Joined: Oct 2011
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From: Raleigh,NC
Year: 1992
Model: Cherokee
Engine: 4.0L HO
Both of my backup lights haven't worked since i got this jeep a few months ago. The bulbs are good and properly plugged in. I've read about the NSS causing this issue but i also read that the jeep will not crank if it's the NSS. My jeep cranks, runs, and shifts fine...just need the lights to work. I'm thinking it's the fuse, just need someone to help me out on where it's located.
Thanks in advance.
Thanks in advance.
Thread Starter
Senior Member
Joined: Oct 2011
Posts: 823
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From: Raleigh,NC
Year: 1992
Model: Cherokee
Engine: 4.0L HO
Just finished cleaning the NSS....NOT IT. Any other suggestions? like is there a fuse anywhere for them like i asked in my first post? Thanks.
Last edited by Jarrett; Nov 27, 2011 at 05:09 PM.
My jeep is a 5speed and has a back up sensor in the trans itself..right now I don't have it hooked up so I have no back up lights, but I think your sensor is in the NSS itself.
Thread Starter
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Joined: Oct 2011
Posts: 823
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From: Raleigh,NC
Year: 1992
Model: Cherokee
Engine: 4.0L HO
Yeah cleaning the NSS like i just did should have done the trick if that was the issue (atleast i'd think). I really need to purchase a haynes manual. I checked the fuses that were in my engine capartment box and cab and they all looked fine. Bulbs are good, NSS clean, fuses look fine, the jeep starts and shifts fine....only thing i can think of would be a faulty connection in the wiring somewhere.
Thanks for the responses.
Thanks for the responses.
Try swapping the fuse anyway..I know my turn signal fuse looked great, even when I pulled it..wasn't blown & looked new. Hazzards worked but no turn signals. Fuse looked great, replaced both the blinker relays and still nothing.
This caused me to thing that I had a cut wire, or short somewhere..since I had hazzards and stuff.
So I took my whole head panel and everything off, I traced wires for 2 days before I gave up..I found nothing wrong at all!
A few weeks later I was at autozone and grabbed a box of fuses for the hell of it and replaced em all in the parking lot..sure enough I left and I had turn signals again.
This caused me to thing that I had a cut wire, or short somewhere..since I had hazzards and stuff.
So I took my whole head panel and everything off, I traced wires for 2 days before I gave up..I found nothing wrong at all!
A few weeks later I was at autozone and grabbed a box of fuses for the hell of it and replaced em all in the parking lot..sure enough I left and I had turn signals again.
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CF Veteran
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From: Riviera, Texas
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
Senior Member
Joined: Mar 2011
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From: Las Vegas
Year: 1992
Model: Cherokee
Engine: 4.oL H.O. 784 injectors, EV6 to EV1 connectors, APN header, Dynomax exhaust
If the NSS isn't clocked right they wont light up either.
Really dumb question, I know you said the bulbs are good, how do the sockets look?
If that doesn't work test all the fuses then clock the NSS.
Really dumb question, I know you said the bulbs are good, how do the sockets look?
If that doesn't work test all the fuses then clock the NSS.
Thread Starter
Senior Member
Joined: Oct 2011
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From: Raleigh,NC
Year: 1992
Model: Cherokee
Engine: 4.0L HO
Those sockets were the 2nd thing i checked lol. It's a great question actually because i had one of the sockets cracked on my turn signals that i recently replaced. But the sockets are good. What do you mean by clock the NSS? Thanks for the responses.
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From: Las Vegas
Year: 1992
Model: Cherokee
Engine: 4.oL H.O. 784 injectors, EV6 to EV1 connectors, APN header, Dynomax exhaust
The NSS doesn't have a fixed position, it can rotate fore and aft. Loosen the bolt holding it in place and snug it so it can be moved but not flop around freely.
Easiest if you have two people helping, one to sit on the brakes and put it in reverse, the other to see if the lights come on as you clock the NSS. Slowly rotate the NSS and see if it will engage the lights.
Easiest if you have two people helping, one to sit on the brakes and put it in reverse, the other to see if the lights come on as you clock the NSS. Slowly rotate the NSS and see if it will engage the lights.
Resident Zombie Hunter
Joined: Aug 2010
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From: Virginia
Year: 1997
Model: Cherokee
Engine: 4.0L
The only problem is they still wont come on for him when he puts it in reverse. He'd have to throw a switch manually each time and depending on his state requirement that may not pass inspection.
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From: San Diego, CA
Year: 1996
Model: Cherokee
Engine: 4.0 HO
Yeah cleaning the NSS like i just did should have done the trick if that was the issue (atleast i'd think). I really need to purchase a haynes manual. I checked the fuses that were in my engine capartment box and cab and they all looked fine. Bulbs are good, NSS clean, fuses look fine, the jeep starts and shifts fine....only thing i can think of would be a faulty connection in the wiring somewhere.
Thanks for the responses.
Thanks for the responses.
Thread Starter
Senior Member
Joined: Oct 2011
Posts: 823
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From: Raleigh,NC
Year: 1992
Model: Cherokee
Engine: 4.0L HO
Ah ok yeah I clocked my nss because it wouldn't start in neutral after I put it back up there but didn't even try to further adjust it. Ill definitely try that tomorrow if I ever get the time to. And yeah I thought about doing a manual switch for the lights if I can't find the problem; ill have to look into inspection policies about that. Thanks again for the help guys.
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Joined: Mar 2011
Posts: 522
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From: Las Vegas
Year: 1992
Model: Cherokee
Engine: 4.oL H.O. 784 injectors, EV6 to EV1 connectors, APN header, Dynomax exhaust
I'd mark the location farthest fore and aft that it'll start in park and neutral and kick the lights on. Then drop it somewhere in the middle.
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