So I gutted the interior to Herculine the floorboards and now for some reason I can't get any juice from the battery to crank or turn anything on (lights, radio, etc.). The battery is fine (reading 12.5V) and the connections are clean and tight, I just can't get anything to work.

Could it have been the water I used when spraying out the inside?

Any thoughts?

 

"Could it have been the water I used when spraying out the inside?"

You probably answered your own question.

 

Check and see if your gettin power to your fuse box And check for corrosion in the fuse box

 

Yep sir, that would be a very good place to start, the fuse box doesnt like water. have fun=D