[dlc153]

Hi is the a permanent live in the boot I'm fitting a tow bar and can't locate one I have a 2013 b max zetec I know there's one In the cigarette lighter located behind the handbrake but can't remove the casing

 

[Gremlin]

the cigarette lighter normally turns off after about 10 mins.
most towbars come with the 'sub-loom' for the towing electrics, just use one of them.

 

[cianpars]

I haven't done a towbar for a few years but if I didn't have a wiring diagram, I would find the black wire which was always negative and tap into the wires coming from the clusters with Scotch blue clips. If I ended up with the tail light connected to the the indicator or the stop light connected to the fog light, I would simply swap them over until they were correct. Never failed for me. A bit tricky with the B-MAX though because of the lights in the tailgate.

 

[cianpars]

ps, I never used to bother with a relay, though technically, I don't think that's quite legal.

 

[Gremlin]

the proper cable kit resolves issues with fog light, and also reversing sensors on the car.