high brake light not working

[bobcatss66]

Hello, I have a 2001 pt. The other day I noticed that the high brake light was not working. I changed all 3 bulbs and it was still not working. Both the left and right brake lights work and all of the fuses checked out ok. Any ideas? Thanks

[BLUEH20]

The wiring harness from the point that it attaches to the standard brake lights has suffer an open circuit. Look missing ground and/or power.

After checking for the presence or not of the items discussed above, look for a break in the cabling at the flex point of the harness on the lift gate to door frame.

Happy Hunting!

[bobcatss66]

Thanks Blue, I checked everything out and it seems ok. I changed the brake switch (behind the brake pedal) about a year ago because it was stuck on. Everything was working then. Is it likely that the switch is bad? Thanks

[BLUEH20]

Nope--it ain't the switch.

Electrically, the CYCLOPS (center mounted brake light) is just a third brake light. If the port and starboard are working fine and the bulbs are good in the CYCLOPS--it has to be in the harness wiring.

There is a splice in the main brake harness running down the port side of the vehicle. The harness runs from there to the CYCLOPS lamp assembly--it does take a bit of flexing when the tail gate is lifted and closed--that is where I would look for a broken wire--hot or ground--either could cause your problem.