I HAVE A TAILLIGHT DASHLIGHT PROBLEM ON MY DAD'S 1983 TOYOTA 4WD TRUCK. HE HAD TROUBLE WITH ONE HEADLIGHT NOT BEING AS BRIGHT AS THE OTHER AND TOOK BATTERY OUT TO WORK ON FRONT RIGHT HEADLIGHT LAMP AND CLEAN THE CONTACTS AND CHECK GROUND WIRES. WHERE IT PLUGS ONTO THE HEADLIGHT THE PLUG WAS CRACKED ON ONE SIDE, YET SEEM TO HELP THE LIGHT BE BRIGHTER AT LEAST FOR A COUPLE DAYS. AFTER REINSTALLING THE BATTERY NOTHING WORKED AND IT WAS JUST BAD CONTACT ON THE POSITIVE POST AND ALL SEEMED WELL AND WOULD CRANK TOO. THE NEXT DAY WAS WHEN MY NEPHEW BORROWED THE TRUCK AND SAID THE TAILLIGHTS WE'RNT WORKING.DAD SAID THE DASHLIGHTS WERE NOT WORKING A FEW DAYS BEFORE THIS SO TAILLIGHTS COULD HAVE BEEN OUT ALSO THEN. IS THE RELAY OR LIGHTSWITCH ON THE STEERING COLUMN THE PROBLEM. THE FUSE AND TAILLIGHT BULBS CHECKED OUT GOOD. WHAT DOES THIS PROBLEM SOUND LIKE TO MY GOOD FRIENDS?--THANKS
GOOD ADVISE--I ALSO LEARNED THAT THERE MAY BE FUSES IN UNDER THE HOOD ALSO. FOUND OUT TODAY THAT IF THE DOME LIGHT DON'T WORK THEN IT'S FUSE COULD BE BLOWN AND HINDER THE CIRCUIT TOO. I'M NOT GOOD ON VOLTAGE READING , BUT DO HAVE A TEST LIGHT. IF NO FIRE AT THE COMMON TAIL LIGT-DASH LIGHT FUSE , THEN THAT MIGHT NARROW IT DOWN. I HAD THE SAME TROUBLE IN MY 1990 FORD XLT LARIAT AND WAS BLOWING THE TAILLIGHT FUSE. IT WAS A SHORT IN THE EXTERNAL TRAILER KIT HARNESS WHICH CAUSED FUSES TO BLOW REGUARLY. WHERE IS RELAY FOR TAILIGHTS AND OTHER FUSES UNDER THE HOOD??
SOURCE: 1986 Toyota Pickup Instrument lights and tail lights out
Even though the relay is activated,I assumed you checked the out put?Also,You checked the voltage at the light sockets?With a meter,or test light ,check the fuse for the cluster lps,adjust them to dim,and to bright,the meter should act accordingly on the fuse.If it does not,replace the dimmer control,or head light switch,witch ever controls them.This may allow continuity to the tail lights as well.If the fuse is dead for the cluster lights,replacing the dimmer control,or head light switch will solve the problem,or,from another fuse ,supply voltage to the cluster lp fuse,one that is only hot with the key on,cause if you do this the dash lights will come on,every time you run the vehicle,day,or night.
SOURCE: Dashlights and temperature dash lights not working
Turn on your headlights and check to see if your taillights are working. They act as a fuse to your dashlights, its a safety thing
SOURCE: my chevy impala 2002 headlights
change your signal light switch. i just had the same problem. cost me a 150.00 for an after market switch, comes with a full harness that plugs in under the dash.
SOURCE: how can i get my tailights and dashlights to work on my 1999 ford escort
Might be in the switch.....this could cause that problem. hope this helps and if so Please leave rating on this post and good luck.
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