No Marker Lights or Tail Lights

[Ksjayhawker]

2006 TS 40DS04 Spartan Mountain Master chassis

I have lost all of my marker lights and tail lights. I have checked all of the fuses and they all look good. I suspect I may have a bad relay but I can not find any relay marked with tail lights. I have checked under the front drivers side compartment and the busbar in the rear. Any suggestions where I might find the relay tying the marker lights/tail lights together. TIA

[Ksjayhawker]

Glad this has everyone as stumped as myself[emoji3][emoji3]. Even Spartan was mystified.

[yackman]

Check your smart wheel fuse. It is connected to tail lights to flash after passing. My fuse was corroded and I lost tail lights. cleaned and worked fine since. Some of my fuses corroded a little due to leaking light in compartment. That can also cause cruise control to not function.