Electrical fault

[mitch19]

Hi all

My 63 mini indicators, brake lights, wiper motor and fuel gauge stopped working during a journey. I've replaced the fuse unit 1,2,3,4 with 35 amp fuses but no joy. Thinking it may be an earth somewhere. Any ideas before I take it to an auto electrician would be much appreciated. Cheers

[Daz1968]

You really need a multimeter as it may be a bad earth or bad connection on fuse box, I had an issue with the dash lights and it was a corroded fuse box terminal quick clean and it was ok.

[smithyrc30]

There is a common earthing point for all your issues except the rear brake lights. The earth is bolted to the body near the control box. It has four wires in the connection.

One of the black wires at the above earth point earths the fuel gauge and wiper motor, another does the RH indicator at the front. There are two more connected there as well, one earths the control box the other does the LH indicator and the parking and headlights. So I would have expected all the front lights to fail if it was the earth that was the issue.

On terminal A1 of the control box there are two brown with blue wires, one goes to the ignition switch the other feeds the ignition controlled fuse which controls the indicator relay, the brake light switch, the fuel gauge and the wiper switch so I would start there.

Probably corrosion on the control box terminal.

Cheers

[mitch19]

Thanks chaps, appreciate it, will clean up that terminal and hopefully sort it prior to l2b