I have an odd issue, my tails/markers will not turn on whatsoever. If I jump the TNS relay i get power to them, but no brake lights. If I jump the relay the switch has no control as well.

If i check the TNS relay wiring, i get two 12v and two grounds (0.4 Ohms/0.5 Ohms) constantly, no matter the switch position... shouldnt one be a switched ground showing nothing? Does the switch send a ground signal to the relay or power? Here is what i see on my multimeter


Also, on a side note, what is this plug on CPU2, i dont seem to have it, and dont see anything that might plug into this.


thanks!

 

Not sure on the TNS. If you have it jumpered the switch won't do anything - the switch is activating the relay, and with the relay unplugged the switch won't do anything.

There is one blank plug on CPU #2, no biggie there.

Dale

 

thanks. i ordered a new relay, hoping that solves my issue.

I am also not getting brake lights to the tails. I get the 3rd brake light but no brakes in the tails themselves

 

New TNS relay fixed my issues.

Now i gotta figure out why my one front marker light isnt working. its not the bulb and the wiring looks good...