| Re: Battery disconnect wiring
For a battery disconnect switch I would always put it on the -ve as close to the battery as possible.
But if you're talking about a motorsport emergency engine kill switch I believe it has to go on the +ve and must specifically disconnect the the ignition, fuel pump/s and alternator. The reason for this is that otherwise the alternator can continue to power up the system and the engine may keep running.
Not being an electrician I may have the reasoning wrong, but that is my understanding.
Cheers, |