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BILL WILLIAMSON · 05-09-2016, 07:55 AM

I "think" I've seen tiny rectangular, stick on voltmeters, with 2 skinny wires. One to a HOT & one to a GROUND. They don't need to be "switched", as they use very little current. A friend has a TACH that's similar.
Bill Simple

05-09-2016, 07:55 AM	#15
BILL WILLIAMSON Senior Member Join Date: Dec 2010 Location: FRESNO, CA Posts: 12,560	Re: 12 volt gauge question I "think" I've seen tiny rectangular, stick on voltmeters, with 2 skinny wires. One to a HOT & one to a GROUND. They don't need to be "switched", as they use very little current. A friend has a TACH that's similar. Bill Simple __________________ "THE ASSISTANT GURU OF STUFF"