So I just picked up a beautiful 68 sport fury, 383 dual quad motor. Very good running and driving. However the brake lights dont work most of the time. They work every once in a blue moon for 5 stops then nothing again. I also noticed the hazard lights are also inop. Im a mechanic by trade, but, Im a litle stumped on the wiring of the system. Any theories to the root cause? A hazard switch isnt easy to come by, I dont know if its related to the problem though.
change the brake light switch first.. thats the most likely place to fail intermittently..you could have a fuse issue.. or a power supply issue..as brake lights and hazard flasher power are usually supplied by the same fuse..turn signals are on a different fuse and flasher.. from the hazard flasher to the turn signal switch is a white wire..power from the fuse box to the brake switch and the hazard flasher are pink and from the second fuse from the left in the fuse block.the power to the 2nd and 3 fuse from the left are supplied by the red with a tracer wire from the splice in the black wire to the amp meter...that comes from the back of the alternator.. via the bulk head connector. but also thru the amp meter.. so you will want to check those contact also.. clean the fuse clips... with the battery DISCONNECTED please...there is a small chance that your turn signal switch is bad..but check the white wire going into the turn signal switch.. thats directly from the stop light switch.. the hazard output wire is RED.. and that goes directly to the 4 pole hazard switch..why not disconnect the battery so there is no current flowing.. turn the hazard flasher on and off perhaps 50 or 100 times.. this may clean the contacts ...this does not work with the battery hooked up as you are just adding to the carbon as you make and break the contact.. ref 1661.
don't change anything, spray the hell out of the fuse box with computer contact cleaner, and the connectors in the engine bay. it will light right up again. replace your fuses will help too.
Everything came back alive in my car with a good cleaning or two- a few light sockets that were obviously rusted. Make sure the switch above the brake pedal is moving freely. Theres a little white washer that should go up and down. hazards-There's a thing hanging down with a plug and a cylinder under the dash near the steering column called a flasher that may help with your hazard lights there like 10 bux and there are several to choose from at any auto parts store has a plug shaped like this ( I_ ). you may have to try one or two compare yours with a new one. Your car may have a relay at the top of the fuse box that may need replacing also 5-10$ part off ebay. these are grey metal boxes with plugs on the back. Use the part number and look closely at the plug configuration for a replacement. All these contacts need love and a little (GENTLY) poker tool/tiny flat head to get a new surface for the electricity to pass through.Did you get it fixed?
widdafury.. you are replying to a post that is 8 months old.. he has not logged back in since the day he joined