1992 Safari Ivory no brake lights

[kerock]

Hi all, I have been struggling with this coach now for about two months done everything from belts hoses new brakes, and now there are no brake lights, everything else works signals, hazards but no brake lights, put a power to one side of the brake switch nothing happened went to the other side and blew the fuse the wire was hooked into. The switch was faulty (stuck) in the off position installed a new switch still no go, I'm at a loss what to do next any help would be much appreciated.

Steve

[Skip426]

What chassis is your coach built on . Gas/diesel ? Air brakes or hydraulic?
Do the rear lights on your coach use the same bulb for signals and brake lights?
If you have a common bulb for signal and brakes then here's some testing.

If you have power through the brake light switch with the brakes applied the next item in the circuit is the turn signal switch . You should have power to one of the wires to the signal switch, from the brake switch , at the base of the steering column ( a connector with 7 or 8 wires) there will also be a power feed from the hazard flasher and when the ignition is on the signal flasher.
With the brake pedal depressed there should be the power from the brake switch to the signal switch AND two other wires , the ones that go to the rear of the coach. If you have power up the column to the signal switch from the brake light switch and none back down , you have bad internal contacts in the switch and need to replace it.

[kerock]

Hi thanks for the reply, it's on an oskosh chassis 8.3 cummins they do work off the same double filament bulb, the only thing I noticed is that the two wires which go to the brake switch a purple and a green don't go to the front steering column they go towards the back along with about 3 or 4 others in a tape like wire. I have no power at the brake switch, I placed a power wire one at a time on the wires one did nothing the other blew the fuse it was attached to ground I guess. Could this switch be switching ground.

Steve