Thread: Blowing the fuse when I select reverse??

Did you stick your head underneath and have a look to see if anything is out of place......?
Sounds like you may have a short in the reverse light wiring......

Have you damaged a trailer plug or a reverse light recently......?

If you have a trailer plug.....check and make sure no clown has mucked around with it......
On the old style round plugs.....it was always fun to stick a 5cent coin in the plug under the flap.....which would blow all the light fuses as each light was used.....

Ta, I'll go and have a look now and it wasn't me who broke anything

No, it all seems good (how did you know I had a round trailer plug?)

This happened a few months back on mine, the fuse holder itself was burnt out in the fusebox. I connected the wires from the original fuse position to an aftermarket, separate fuse holder with the same rating fuse, think it was 7.5A. No further issues so I put it down to a loose fuse holder.

,i'd be looking at the reverse switch on the gear box . If you have a light tester,disconnect power into switch ,and test,asuming you'v put a good fuse back ,test to that point , if ok work back from there , if not the problem is in front of the switch . You can bypass the switch to see if the reverse lights work . You should be able to move your truck . A blown reverse fues shouldn't stop you good luck jimr1 ...

Thanks, I'm not really fussed about the reverse light, it's my brakes lights that are concerning me.
This morning I just removed the fuse to reverse out, then put it back in, so I just need to remember to remove it before I reverse until I get some more time to sort it.

Had this issue a while back, chased it all over my tdi, used to happen regularly in rain, replaced switches, lights, re wired- ended up fixing by pulling wire harness out of chassis rail a bit where it enters at front (check where harness exits at rear to, can rub ontow bar) ,not blown a fuse for 2 years now

Brett

110 300 tdi

If we are discussing tdi300 defender, it should be fuse #17 which is 15A

The fuse holders do become sloppy but this would only break the circuit causing the lights to not work, but shouldnt blow the fuse. You need a short circuit or overloading to blow the fuse

I had the same problem and it was a worn wire shorting against the chassis.

Eliminate fault in the switch like jimr1 suggests. If thats not the problem

If you have a meter, remove the rev globe, install a good fuse, dont turn ignition on, select reverse to activate the switch, and systematically test the circuit for low resistance between power cable (I think it is a brown with green stripe to the rev) and ground.

Mine was melted, blown by the heat. And it probably was 15a, was in September so a few sleeps since then. Wire in the chassis would be the logical thing to look for!