Sorry in advance for my ignorance, I'm not really sure how to read wiring diagrams... Does anyone know where this plug goes? It splits off right next to the 3 ECU plugs and is in it's own shrink wrap. I suspect it goes somewhere behind the dash or to the fuse block in the engine bay. A few years ago I rolled my favorite pickup (85) and ended up hanging onto it, I purchased an 83 cab and bed off of craigslist thinking it would be an easy swap.. Well, it hasn't been! I've had some free time so have spent the last two weeks doing the swap. It's not pretty but it's going to work! My only problem is that I have no idea where this plug goes. I looked in my haynes manual and feel like it has something to do with the lights due to the colors of the wires but am not sure. Thanks!

 

I would really try and get copies of Toyota`s wiring diagrams for both years

Just what year wiring harness did that come from ??

Do you have any idea ??

This is just a wild guess but do you see any matching plug that it would mate with.

Wires cut that might match

It might be the plug for the harness going back to the rear of the truck lights fuel sending unit.

Do you have this accounted for yet??

 

A/C amplifier?

 

Thanks @wyoming9!

 

Yea pretty sure that's the taillight/fuel tank plug that normally sits under the passenger seat. Other half should be attached to the frame just below the hole.