FIRST GEN ACCESS CAB REAR SPEAKERS INOP

Wiring routing issues?

 

You can find wiring diagrams here..
Kinda odd if both them are out..

Ultimate TUNDRA Wiring Diagrams Collection | Toyota Tundra Forum




Connectors
At the radio


Speaker wire routing.

 

One of the tricks I use to quickly check is a 1.5v battery across the wires you suspect are for the rear speakers to verify routing (in case you have a rats nest from the prior owner).

 

9v, inusually use.

@ah3000 more info needed. Are you running aftermarket stereo? If yes, what harnesses did you use?

Is your OEM amp in the dash, or under the black panel inside the rear passenger cubby, under the seat?

Also, “stupid check”, you didn’t accidentally use the FADER setting to push sound to front speakers only, right?

Sound typically doesn’t blow out on two channels at the same time, unless you have some scAmazon piece of shit radio in the dash, then it’s pretty common.