Tail, temp, obd short

Tail lights, temp guage, and obd2 stopped working all at the same time. It's either a coincidence or a short that involves all three.

All fuses look good. I jumped the taillight relay port in the under hood fuse box to see if maybe the relay was bad. No dice.

Before I got to town on this problem and tore in to wiring under the dash, I was hoping to get some clues from you all.

 

Unless your clutch or brake pedals are rubbing wires or rodents chewed things doubtful your issue is under the dash

No Tail lights what about the front marker lights and dash lights??

The OBII system Fails to connect

A short causes circuit protection to open or things to burn and melt to the circuit opens .

A open circuit the circuit no longer works

 

looks like there is a 50 fuse in the junction box...

 

Markers and dash work. I don't follow the rest other than to say I agree.

 

The one that corresponds to j/b 50a looks good.

 

Ok. Separate issues. Found the bad taillight wire