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1966gmc · 10-14-2007, 12:24 PM

I bought a Sunpro 5 inch tach at a Car and Truck show last weekend.I have it all hooked up but when I looked for a 12v source thats only hot with the key on,I can't.All the spade terminals on the fuse block have constant power at all times.What am I missing here? I know there has to be a terminal somewhere that is not hot at all times. Any help would be greatly appreciated.

10-14-2007, 12:24 PM	#1
1966gmc Why does it taste purple? Join Date: Sep 2007 Location: Cambridge Md Posts: 621	Im having a dilema with tach wiring I bought a Sunpro 5 inch tach at a Car and Truck show last weekend.I have it all hooked up but when I looked for a 12v source thats only hot with the key on,I can't.All the spade terminals on the fuse block have constant power at all times.What am I missing here? I know there has to be a terminal somewhere that is not hot at all times. Any help would be greatly appreciated.