Car Reverse Lights Not Working? How to Diagnose Wiring, Might Be a Splice Hack!

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Sometimes, when you are diagnosing a problem, the cause isn't a failure in the vehicle, but a bad modification or fix! Watch this video to see how Len discovered that a bad splice was the cause while he was diagnosing reverse lights that weren't working!
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While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.

[@1AAuto]

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[@tommyswenson1127]

Seen that wiring job before, usually for a reverse camera-Why they don't use reverse bulb wire, IDK...;

[@chrismaragoudakis7603]

I have a 03 Dakota with same issue. I already replaced the switch and still doesn't work. Has to be in the wiring. Wish you continued with the diagnosis on the video.

[@REALWOODSMAN]

The lighting in this guys videos along with the details , are great.

[@hardboiledfrog]

Maybe it wasnt the point of the video, but I would have liked to have seen more troubleshooting and actual repair. What were those wires going to? How do you test the switch to see if it is working? How do you remove it and install a new one? A lot more could have been done with this video. But I guess it's not really a mechanic channel, just a parts seller channel maybe.

[@b1blazin13]

Whatever bro. 1A auto always has done full service repair videos for FREE. Maybe follow instructions

[@papamrk1343]

@@b1blazin13 Not trying to jump in this fight.. But What instructions are you referring to? I agree 1A is a great source, but I have an Automatic, does the same apply for location of the switch?

[@nukems6397]

@@b1blazin13 you wrong. Some of us really wanted to see how he changes those wires and more.

[@tintdr]

They tapped into the reverse lights switch because they had a backup camera at some point hooked up to a double din radio or a single din slide out screen with backup camera plate frame

[@xXsilentvatoXx]

Finally a video worth a watch! My 89 Silverado is a manual and I couldn’t figure out how to fix it. My reverse switch is there with no wire. I’m going to order one now.

[@1AAuto]

+xXsilentvatoXx Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@gabrielmiranda3413]

That helped out tremendously thanks brotha

[@panchovcarlo]

Thanks. I learned something, but I have a 2013 Police Interceptor and they pulled wires out when it went to auction. I need to find which wire s for the lights.

[@jasonpearson4983]

So I have a 2000 Ford F-150 it has power at the switch but when I put it in reverse it doesn’t illuminate the bulbs. However if I put a jumper wire to the plug on the harness both lights come on. When I feel around to see what engages the ball bearing on the back of the switch I find that the hole goes about a inch in and there’s nothing there. What pushes the switch when you go into reverse? Thanks

[@b1blazin13]

Thanks for the video I'm having this problem on my 2002 Chevy Silverado 2500 HD. My reverse lights don't turn on and my blinkers are bugging out when I push on my brake pedal. The brakes are also dim when I push on them but the red gets brighter when I let off the brake. I'll update when I find my solution.

[@papamrk1343]

I am running into a similar problem. Both my Back Up lights are out. At the same time, I have a Back Up Camera. When in Reverse my Camera actuates like normal but lights dont. Any pointers?

[@alexandermeans364]

can you tell me the location of the backup light switch on a 2008 ford e450 6.0 turbo diesel?

[@Strixology]

In this video you mention that because it’s manual that sensor is on the driver side. I have an 08 Silverado 1500 4.8L 4WD Ext cab and only my reverse lights don’t work everything else does. Think you could make some tutorial for that? I’ve used your videos to replace my breaks already! Love your channel!

[@jeffreyrogerkelly3751]

thanks for sharing

[@justdissin7340]

I just had a transmission rebuilt & now reverse light on my sonoma dont turn on. I replaced bulb & no luck could it be from mechanic working on transmission?

[@hawcowboy341]

I have a 2002 Mazda B3000. Both reverse lights are out, but all the other lights work. What i want too know is this same setup apply too an automatic transmission? Thanks in advance.

[@aragorncombs4735]

What if you aren't getting a reading from the fuse at all? Same with other fuses also.

[@steflo4544]

A common misconception is that the word *HACK* is a good term , but in the automotive word *HACK* is NO BUENO !

[@am6066]

Why didn’t you continue troubleshooting?

[@Monraseven]

For me the reverse light is not working, bulbs are good, fuse not blown, replaced the backup light switch on the gearbox, still not working, anyone got any ideas?

[@alonsomancilla6592]

I have the problem I tried everything I can I have power on the fuse I checked all the harness on the transmission sensors but I don't have power it's something I doing wrong??

[@albertosoto9384]

Thank you!!!

[@andyanderson3371]

I have no power to my switch 1991 GMC Sierra. Where does the power wire connect to the circuit? All other lights work except Back up light.

[@maliqelliott2568]

Just got my car back yd from Nissan after my slave cylinder, clutch, fly wheel and whatnot had to be replaced. And it just so happened that on that day my car was due for inspection and that's when I found out that not only didn't my reverse lights work anymore bur my rear view camera didn't work anymore as well. Took the car back to Nissan yd but was told to bring it back in monday so that they can figure out what went wrong at no cost to me so they say. So my question is of course Whatt did happened?

[@brandiigiibson]

Why would a backup camera not be coming on when a car is in reverse? I have a 2018 Honda Accord and my backup camera does work, I pulled it up through the diagnostic menu, but my car does not register being in reverse electrically. The "R" does not show on the dash, no reverse lights, and it does not trigger my backup camera.

[@joepadilla7871]

I cannot find 2005 Chevy cobalt reverse switch on my model

[@MewMewStyles]

My Cargo Reverse Lights Are ALWAYS On , Even When My Truck Is Off; Any Idea? 97 F150 Xl

[@smokewalker6885]

I have a 76 chevy Silverado 3/4 ton camper special with only 15000 orginal miles on her, my tail light stooped working when i blew my brake booster should i replace the wiring harness or by a multimeter

[@b1blazin13]

Both

[@bcase1962]

Congratulations! You disconnected the power for their backup camera.

[@Jenitza82]

I have a Nissan versa with s new cvt transmission that was replaced by the person who sold it to me. At home we noticed reverse lights won't work. Took it to a Mechanic and he doesn't know why the reverse lights won't turn on.

[@adamgoof]

You should do a sponsorship or at least help me out with some parts for my 1974 Chevy C-10 Maybe you could do a video on it .Because there’s people like me that need all school parts for all cars

[@levigrafton6854]

Epic intro

[@brandondonovan8402]

It is like that is the one that ChrisFix had in a video. I would not be surprised if that is wired because the owner followed his video.

[@RogerMehani]

Total useless info. Where is the Hack, how do you revire from switch, need to show more and talk less.

[@luvdady]

Yeah back up cameras need a reverse trigger is probably a good reason for the wires. If you have a 7pin trailer plug you can tap off that wire I've been told

[@1AAuto]

+luvdady Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@danielw1621]

Didn’t show testing power to switch or testing switch

[@berniceperry8898]

Well whats the problem, did u get it to work....I didnt learn anything...good try tho but next time make a video with a solution that u can show that works....!!!!!

[@1AAuto]

+Bunny Hall Thanks for the feedback!

[@mikemaben7485]

EXTRA WIRES. FRM TRANY. WAS MORE THAN LIKELY 4 A BACK UP BEEPER.

[@akhileshmm2876]

🤩

[@johnhopewell6501]

I have a ford focus 2003 mk1 . All of a sudden my reverse light stopped working after checking all my lights I also found the rear fog light does not work either. I have checked and changed bulbs . Checked and changed all appropriate fuses. Even had it into a garage this morning thinking it could be the reverse light switch on the gearbox they said that it was fine . I've taken out the light sockets and gently scraped off any and all corrosion. I've checked the grounds and they are fine . Also checked the wiring that all seems to be fine too. Anybody have any ideas .

[@mattc.310]

Instead of talking through the troubleshooting and repair, you should have demonstrated it. Much easier to follow for those that are visual learners or new at repair.

[@keithdowers5136]

Didn’t actually show how to test the switch.

[@boomertsm]

That’s how people get shot, beat up, or otherwise. Just give a shout and walk away.

[@MrOner07]

where are the reverse lights?!!!😡🤣

[@raymondpetrovits2336]

Didn’t do a freaking thing! Fix it and show us if you are a mechanic. I tuned in because I bought a stripped out race car wanted information on wiring and the the reverse switch to make it work. Worthless

[@jackstoepfer1494]

You didn’t fix it