A slight aside:
A friend of mine bought an early years suburban bigblock 4x4 for practically nothing.
500 bucks I think.
The guy who sold it had just reached the end of his rope about an electrical problem.
The vehicle would randomly shut itself off while driving down the road.
Some jeep Cherokee do this without anyone knowing why, but this was a suburban.
It took my friend three stalls to find the problem.
When accelersting up a certain %grade a wire would swing just right and ground itself out on the drivers side header. It killed the ignition. Since there was no longer an acceleration the wire returned to its static spot, the sub always restarted as if nothing had happened.
Not being a guy who carries a pocket knife, he just tied a knot in the loose wire.
I kinda remember him getting $3000 bucks when he sold that suburban a bit later.
Punchline:
Forget where or why on a ground or power, and you're in for some intermittent pain.
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