Originally Posted By Sinitro
Originally Posted By RapidRobert
the diagram makes sense but I am curious why there is 2 seperate wires for ground and 2 seperate wires for hot as opposed to 1 wire for each & doing the T ing inside the cup


Because the tach can be wired for a positive ground or negative, and 12V or 6V..
Means that internally the primary electrical circuits are floating above ground. Just my $0.02... wink
Noted

live every 24 hour block of time like it's your last day on earth