I have a 16188051 PCM pinned up on a test bench setup. My first attempt to make a standalone system for a 94 LT1 engine I have. Is it ok to apply power to the PCM all at one time? That is there is a battery on all the time connection and the others that are on with start/run. I didn't know if I needed to apply the "battery" power first then the ignition power or if it mattered.