Soooo havnt found much searching for all the problems i have. 93 SC300 1JZ swap. Shortly after removing the radio the lights speedo and tach are all non working. (The slap the dash doesnt work) The temp gauge works as its grounded to the chassis (1j swap) but none of the other gauges(cant confirm whether fuel gauge works). The clock works if in the acc. position but not in the run position, and the odo doesnt ever come on either. I dont think this could be a "rebuild cluster" type thing but i could be wrong. Any point in the right direction for testing would help.

 

check the gauge and radio fuses

 

forgot to mention the gauge fuse is good power to both sides. went to check the radio fuses and i pulled the cover off the under hood fuse box and went inside to test my test light on the battery and the gauge lights worked. turn key off then back on and back to nothing. both radio fuses check out good at least where the fuse is theres power. the lights working then shutting off after an ignition cycle scares me i may be ****ed with wiring nightmares

 

that honestly sounds just like a gauge fuse, that's exactly how mine acted when it blew, don't know though

 

Hope this helps. After my swap I missed 2 grounds and everything worked after that, same problem as you.