John A

I would use an automatic reset circuit breaker mounted as near the battery as possible with a well insulated lead to it from batt +.The circuit breaker can be gotten at any automotive parts place in any amps that you want.I use the type with a mounting tab and have used this setup for many years and miles with no troubles.

I find it useful to set the TPS at wide open throttle and disregard what it is at idle or with blades fully closed.The reading at closed fluctuates depending on how hard you push on the thing but at WOT it's always the same.Theorectically it should be at least 80% of the reference voltage at WOT.On my hotrod Bassa I set it at 4.86.On Mikes Centauro I set it at 4.83 as it has an unknown chip in it and seemed to be running a shade rich. a change of .01 volt makes a noticeable difference but you cant adjust that with any repeatability at idle or closed throttle blades.