Power shut-off switch

[Stingray70]

Originally Posted by CWPASADENA

I was involved with Motorsports for more than 50 years and all my experience was the the Master Shut Off Switch was always to be on the ground side.

Chris W.

That's interesting. I've spent many years in the marine industry and I don't think I have ever seen a battery switch on the ground. Of course in most yachts there are multiple battery banks. So it is more practical to have the OFF switch wired this way.

I am pretty sure general aviation is this way also (and light aircraft usually only have one battery).

I wonder if it just really doesn't matter which side is switched? Just different industry practices?

FWIW my Model A came to me with a cutoff switch in the negative cable mounted near the starter. Ugly, but works fine