I have a '95 SC400 and on the way to work the other night, I lost all all power to the car except for the engine. I had no head lights, no power inside the car. Then after about five to ten minutes it clears up, all power returns.

 

Check your main grounding points and your wiring harness (for rubbing) through the front left wheel well, especially if the car is or has been lowered.

 

I've already moved the wiring harness from the left wheel well. I had to replace the battery but it is still doing it.

 

Did you unplug and reroute the harness, or cut and extend it? It sounds like you have a bad connection in there somewhere, although it could be a million other things. I would start by double checking that your mod held up.

 

I unplugged and rerouted it. I will recheck the plug.