johny F Posted April 22, 2011 Report Share Posted April 22, 2011 my 81 720 brake lights are not working.i replaced the fuses.and stop lamp fuse..and nothing.my bulb was blown.so i replaced it..still nothing..i checked the wires.and cant notice anything..although previous owner mudded the shit out of this rig..so may it be the wire grounded off somewere?.im not good at electrical..i wish i knew someone to pay to fix this problem lol..im stumped..please any advice? Quote Link to comment
wayno Posted April 22, 2011 Report Share Posted April 22, 2011 Get a volt meter and find out if there is power to the plug, take the bulb out and test for power at the bulb connections, if not, back track from there. Quote Link to comment
datzenmike Posted April 22, 2011 Report Share Posted April 22, 2011 If the running, marker and license lights work then so does the ground. Find the round connector on the right rear that connects the rear light harness to the main truck harness and unplug several times to clean the contacts. You really need a test light because electricity is invisible. A quick check will tell you is power is even getting back there. The brake wire is the Yellow/Red stripe on the lamp harness and Yellow/Blue stripe on the main truck harness. There is a 10 pin connector under the pass seat... do the same thing to clean the contacts. The wire could be rotten or stone dammaged between here and the tail lights. Did I mention a test light??? :) Only $5. 1 Quote Link to comment
johny F Posted April 22, 2011 Author Report Share Posted April 22, 2011 nice thanks..all check that out tommorow.i messed with a plug in on the drivers side by the tail lights.and made sure the conection was clean.it was a lil dirty but not bad.all have to get a test light tommorow..and start testing everything..hope i can get it resolved..its realy starting to irritate me.i thought forsure it was gona be the stop lamp fuse<_< Quote Link to comment
datzenmike Posted April 22, 2011 Report Share Posted April 22, 2011 Yeah that rear connector takes all the shit spinning off the rear tire. Check the brake switch first and make sure there's a brake signal. Quote Link to comment
HRH Posted April 22, 2011 Report Share Posted April 22, 2011 Don't forget to check the brake light switch. Attached to the brake pedal, little round thing. Test for continuity. Quote Link to comment
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