Wiring hot.

Ok I have a couple of wires that are getting hot. It seems like when my brake lights are put on the bus cuts out. I jiggle the wiring under the dash just behind the hazard switch and all electrical things come back to life. Obviously it's a bad connection but why so hot people?? By the way it's got a push button start. Thanks people.

 

@snotty

 

Drop the fuse box and put new connectors on the wires, redo the earth connections

 

You have a lose wire which means not all of the strands are connected and able to pass current. The strands that are connected are therefore taking more current than they are meant to so they warm up. The lose bit will be black and burnt when you find it.

 

bad connections have a higher resistance so get hot

 

^this, possibly. One or more wires is taking more current than it should for some reason. A hot wiring loom isn't good. Could be a poor connection somewhere, or the wiring's been rearranged by accident or design.

If the engine cuts out when you operate the brakes, implies that some wiring error is dragging down the battery supply, killing your ignition.

First step is to have a good look round and see if anything's obviously misplaced, loose, charred or similar. I'd also have a good look at the wiring from the brake light switch(es).

 

If it's killing the motor I would suspect a short and hence warm wires and this should be treated as a potential fire hazard. I wouldn't drive it till its sorted!
Best of luck
Andy

 

You are risking a fire.

Check with a friend or a white painted wall behind the bus at night whether the brake lights actually do come on. They probably do not, and somebody has probably replaced a fuse with a higher rated fuse or screw to try and get it to work.
And your ignition switch is probably on its way out with being burnt by the short as well, causing the voltage drop that cuts the ignition.

 

If the lights operate, it'll be just a single strand making connection, but passing too much current and gettign warm. If the lights dont come on its a short (more likely) so the wire is acting like a heater element and warming up...

 

If you can afford an good auto electrician i would do that ...unless you have a good idea of vehicle electrics .
If you get into a mess with it and messed with wires, an auto electrician will have a even bigger job sorting it