ChiefJosh Posted January 25, 2007 Share Posted January 25, 2007 Does anyone here have any experience troubleshooting non-existent reverse lights for a BA-10? I have some power to the switch and the switch seems to be okay, at least it tests okay for continuity. Where or what else can I check? (Note, I did check the bulbs, they are good.) Link to comment Share on other sites More sharing options...
Wildman Posted January 25, 2007 Share Posted January 25, 2007 I've run into this same problem. IIRC there is a 5 or 7 amp fuse in the upper right side of the fuse box that controlls the back up lights. I'm thinking it that it's the top most fuse on the box. I found this after checking the switch, checking the wiring and the ground wire in the rear. Link to comment Share on other sites More sharing options...
ChiefJosh Posted January 25, 2007 Author Share Posted January 25, 2007 Yeah, it's actually a 7.5 amp fuse, I've tried that, still nothing. Any other ideas? Link to comment Share on other sites More sharing options...
Wildman Posted January 25, 2007 Share Posted January 25, 2007 The only other idea I would have is to check the wiring at the rear, just inside the bumper there is a connection, pop it apart and check for voltage from the back up lights. if you have votage from the front, then check the wiring at the tail lights. I always take the ground off and reinstall it with a new tek screw, after scraping down the paint. Also the rear wiring harness has crimps in the lines, could be one of the crimps have rotted out. Link to comment Share on other sites More sharing options...
Oizarod115 Posted January 25, 2007 Share Posted January 25, 2007 same exact problem. my fuse is good to same tranny and everything Link to comment Share on other sites More sharing options...
SuicidalPenguin Posted January 25, 2007 Share Posted January 25, 2007 Mine didn't work when I bought it. It was just a plug that wasn't attached on the side of the tranny. Little 2 prong thingy. Plugged it in, worked fine. Link to comment Share on other sites More sharing options...
Oizarod115 Posted January 25, 2007 Share Posted January 25, 2007 Mine didn't work when I bought it. It was just a plug that wasn't attached on the side of the tranny. Little 2 prong thingy. Plugged it in, worked fine. you remember which side? Link to comment Share on other sites More sharing options...
SuicidalPenguin Posted January 25, 2007 Share Posted January 25, 2007 you remember which side? Oooh. I can check in the morning, but it's very obvious when you see it. 2 prongs should be sticking out, 2 cylindrical posts, about middle of the one of the sides. The wire was pretty thick and ran from tranny to engine. Link to comment Share on other sites More sharing options...
RandysMJ Posted January 25, 2007 Share Posted January 25, 2007 Also check the "trans" fuse on the fuse box. Mine didn't work and everything checked out good. Then i read somewhere to make sure the "trans" fuse was still good. So i looked and there wasn't one there. So i put one in and they started working. Mine is a AX-15. Not sure if a BA-10 is the same. But it's worth a shot. Link to comment Share on other sites More sharing options...
ChiefJosh Posted January 25, 2007 Author Share Posted January 25, 2007 Yes, there is a "back up lamp" switch on the drivers side of the tranny, I think it's a 7/8" hex head, and that's about all it is. If you have a multimeter, you can check to see if the switch is good by throwing it in reverse (engine off of course), and check it on the continuity setting. It should read continuous if the switch is good, if it's not, replace it. That would keep you from getting power to the rear harness at all. Link to comment Share on other sites More sharing options...
ChiefJosh Posted January 25, 2007 Author Share Posted January 25, 2007 Alright, I've got some updates: My switch checks out okay, continuity-wise; though I had a tough time checking voltage on it, most of the stuff around it is rusty, but there is power there. I checked power at the rear harness, but I've got nothing. What is in between? Anything? What else could be wrong? Link to comment Share on other sites More sharing options...
juan Posted January 25, 2007 Share Posted January 25, 2007 check for a connection under the dash to the right of the steering colum if not very close to it. My 88 Mj had it diconnected - this plug provides power from the fuse box to the lights/switch. Look for a black wire with a yellow tracer ( it migh be yellow with a black tracer - can not remember ) check is connected. good luck. Link to comment Share on other sites More sharing options...
Oizarod115 Posted January 25, 2007 Share Posted January 25, 2007 well, i just remembered... i pulled the tranny fuse cause i thought... hmm i don't have an automatic tranny and used it somewhere else haha. sooo, put in the new fuse and viola!! reverse lights again! i figured the R lights were on the fuse with B/U lights written beside it... what on earth is that for i thought hmm, back-up lights. Link to comment Share on other sites More sharing options...
RandysMJ Posted January 25, 2007 Share Posted January 25, 2007 I thought the samething. I never thought about putting a fuse there since i had a stick. But i read that and tried it and it worked. :nuts: Link to comment Share on other sites More sharing options...
ChiefJosh Posted January 26, 2007 Author Share Posted January 26, 2007 Well, I finally got it. Turns out, after fiddling with the fuse box for another hour, that the connectors that hold the fuse in were a bit loose and corroded. I had it in reverse while in the garage, with the key on, just to see if they ever lit up. I bolted the fuse box back in place and crawled back out from under the dash ready to throw in the towel and I looked back and the freakin' lights were on! :cheers: I threw up my hands, tightened the fuse and left. Glad I got that one ironed out. Link to comment Share on other sites More sharing options...
Oizarod115 Posted January 27, 2007 Share Posted January 27, 2007 so all three of us had the same blasted problem... how classic. hahahaha. we were all waiting to hear this miracle fix... and yeah, :dunce: Link to comment Share on other sites More sharing options...
Pete M Posted January 29, 2007 Share Posted January 29, 2007 My reverse lights in the 88 didn't work at all, that is until I install the AX-15. :D My guess is that the switch was bad in my BA-10. Link to comment Share on other sites More sharing options...
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