No dash lights No start

I recently purchased a 96 Tacoma, removed the bed wired in some tail lights ran great for a few days. Yesterday the blower motor and temp sensor stopped working, I went to start it today and none of the dash lights turned on other than the airbag light. Started up fine 2 mins down the road it would bog out. When I touch the brakes or turned on my wipers the radio would shut off. I got home and tested the battery 12.3v now it won't start just clicks. Checked the fuses and all the wiring looks to be in good shape, not sure where to go from here.

 

Have you tried a priest?

Really though I’d trace your grounds, especially to the engine block. Also the smaller ones that goes to the wall by the cowling and the fender. All that stuff. Would definitely start there and then report back.

 

Ewe
I would start with totally cleaning batt terminals

prior owner let taco sit for extended period of time?
Critter chewing wires comes to mind