[Shotimes] battery in trunk

[van Oss]

Thanks to encouragement from Robert Bruce, I plan to take the plunge and 
move the battery to the trunk in my 92 MTX.  I am using a Summit Racing kit 
bought at the Maryland convention.  A few questions, please forgive me if 
they've come up before.

1. This kit has a short ground wire; it definitely depends on grounding 
through the body.  It's been said the PCM can get flaky unless it's grounded 
directly to the battery.  Shall I run a separate PCM ground wire back to the 
battery?  If so, what gauge?  How (which pin) would it connect to the PCM?

2. I wonder about the 2-gauge red positive wire being charged at all times. 
What happens in a crash?  If I move the starter relay to the trunk, how does 
the car get power for accessories when that relay's off?

3. I have a headlamp-relay harness in this car.  Can I keep it?  Currently, 
that harness connects directly to the battery.  Shall I reroute the red 
wires to the point where the big red cable attaches to the starter motor?

VO