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Before you just replace the fuse, if it's blown there is a reason. Also if it's blown you probably don't have dashboard lights or running lights on the side of the car. Note this is for tail lights (parking lights) not brake lights. The fuse is 15 A on driver's side wall next to brake pedal. Should be top left as you look at it, of course looking at it is a challenge unless you are very limber. If your dash board lights work but you have no tail lights then the fuse is ok and you Lamp Failure Sensor is burned up. Probably the little nichrome wire in it in the tail light circuit. This is probably caused by a dead short in the harness to the trunk lid. It can get pinched at the hinge it you load something in the trunk and push it out of place. Check that harness for damage before you waste money on a new sensor. They are hard to come by and if you have a short you'll just burn up a new one. I just did this this weekend and had two frayed wires inside the protective sheath. I clipped them, crimped them back together and covered with shrink tubing, repackaged and made sure it didn't get near the hinge. All better now.
check where the wires go from the inside of the body to the out around the gromet. I did run into one that the wires rubbed. Also if the light are on the trunk lid check where they go through the trunk latch.
2004 Rx8 kept blowing 15amp brake light fuse. Solution: wire going to rear lights was worn and frayed where it feeds through the left trunk lip on left side of trunk. This can be seen when you open the trunk lid. The wire routes by the trunk lid hinge. If the support connectors come loose, the wires are crunched by the hinge or lid. Re-splice, insulate, zip-tie, replace fuse and replace any blown bulbs.
Hi ....... Look up under the footwell and brake pedal, theres a switch mounted onto a metal bracket, they should self adjust to compensate for wear etc ............... remove from the bracket and make sure contacts and action is good.
there is an electrical short somewhere you have a power wire touching the car's body. Is there tail/brake lights in the trunk lid? if yes, check around the trunk hinge, the wiring sometimes follows the hinge back to the rest of the car and everytime you open the trunk, you are bending these wires unitl one of them snaps.
Check the connections going up from the body to the trunk lid. Right at the hinge point, the wires often break internally. If it's the ground wire for the centre light, it's getting it's ground through the tail lights which should cause the problem.
The other thing to check is the switch at the brake pedal. I think it's 2 seperate circuits right from the brake switch.