reubj Posted August 30, 2014 Share Posted August 30, 2014 Problem: No brake lights. No rear turn signals. Known: Fuses OK Bulbs OK Tail lights OK Front turn signals OK Rear light chassis ground OK 89 MJ Any ideas? Thanks. Link to comment Share on other sites More sharing options...
thejim42 Posted August 30, 2014 Share Posted August 30, 2014 Use a volt meter and make sure you have power to the light socket. Check the switch on the brake pedal Link to comment Share on other sites More sharing options...
MuddFoot Posted August 30, 2014 Share Posted August 30, 2014 check all fuses. check sockets for power. follow wires look and test as you go down. check and see if your flashers work. Link to comment Share on other sites More sharing options...
reubj Posted August 30, 2014 Author Share Posted August 30, 2014 Power to the tail light side of the socket, no power to the turn signal side. Link to comment Share on other sites More sharing options...
reubj Posted August 30, 2014 Author Share Posted August 30, 2014 What has me stumped is the fact that both left and right sides are affected, while the tail lights and backup lights work on both sides. Link to comment Share on other sites More sharing options...
thejim42 Posted August 30, 2014 Share Posted August 30, 2014 Check all the connection points for power Link to comment Share on other sites More sharing options...
cruiser54 Posted August 30, 2014 Share Posted August 30, 2014 2 different circuits in play. Look up under the dash/steering column and see if a long white or blue connector with a ton of wires isn't partially disconnected. Link to comment Share on other sites More sharing options...
reubj Posted August 30, 2014 Author Share Posted August 30, 2014 I'll check that out tomorrow AM and let you know Cruiser. Link to comment Share on other sites More sharing options...
cruiser54 Posted August 30, 2014 Share Posted August 30, 2014 The brake lights and turn signals share the same wiring. They also share the turn signal/hazard switch up in the column along with a few connectors. Wiggle the hazard knob in and out and see what happens. But, don't ignore the connector previously mentioned. Link to comment Share on other sites More sharing options...
reubj Posted August 30, 2014 Author Share Posted August 30, 2014 I just checked that connector (black in this case). I disconnected then reconnected and still have the same problem. Link to comment Share on other sites More sharing options...
cruiser54 Posted August 30, 2014 Share Posted August 30, 2014 Got a meter? Link to comment Share on other sites More sharing options...
reubj Posted August 30, 2014 Author Share Posted August 30, 2014 Okay, taking Cruiser's lead I found another potential problem connector (C159) on the schematic. It connects the chassis harness to the tail light harness. I found it tucked up under the bed behind the drivers s ide wheel well. The PO had ..ahem ... rigged a trailer connector on the wiring and the corrosion had taken it's toll. I re-did all the wiring and everything is good. Thanks everyone for your replies! Link to comment Share on other sites More sharing options...
cruiser54 Posted August 30, 2014 Share Posted August 30, 2014 Gotta love it. Great job. How come I had to look it up for ya then? You've got a schematic!!. LOL. Any time. Link to comment Share on other sites More sharing options...
reubj Posted August 30, 2014 Author Share Posted August 30, 2014 Cruiser, your suggestion got me thinking about connectors being potential problem areas. Thanks again. Link to comment Share on other sites More sharing options...
cruiser54 Posted August 31, 2014 Share Posted August 31, 2014 Cool stuff. And you know I'm only teasing you about the wiring diagrams, right? LOL. Link to comment Share on other sites More sharing options...
kook911 Posted August 31, 2014 Share Posted August 31, 2014 Well glad you figured out the problem as I just had the same problem. PO rigged a trailer light up also and had to figure out that mess. Link to comment Share on other sites More sharing options...
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