Some Electrical questions

66Sprint6

Famous Member
I know, there is an area for this, but no one seems to be answereing and I got another question.
1. If my lighter doesnt have a charge, how else can I run a G Tech Pro???
2. Im about to get a tach for my six, how do I go about wiring it???
Thanx guys
Matt
Also,
Im thinkin bout puttin the tach in my consol's hidden compartment, think I saw thatdone on some later stangs, what do yall think?
 
The tach should have 3 wires on it: one goes to GROUND (bare dashboard metal or screw is good), one goes to the (-) terminal on the coil (under the hood) and one goes to +12v IGNITION source. Get that by tapping into the fuse labelled IGN on the fuseblock. To make sure you're on the right side of the fuse, pull out the fuse and then turn on the ignition. Connect a test light (clip one side to an exposed metal piece somewhere) to one fuseclip to see if it's 'hot'. If it's 'hot' with the fuse out, that's the WRONG side - connect your tach's power wire to the OTHER one.
 
And for the lighter, you need to check for voltage at the wire that plugs into the back of the lighter socket. If there is no voltage, find the blown fuse. If there is voltage, the lighter socket is bad. either replace it or repair it. There may be a high temperature breaker built onto the back of the lighter socket that has failed. My 61 falcon had that problem that I was able to fix without replacing the socket. I pushed a needle thru a hole in the small cylinder shaped breaker and the breaker reset and has worked ever since.
 
Tach wiring is the easiest add since the pertronix. If you have a yellow wire with your tach it might go to the lighting circuit. Use a splice crimp and go into your lighting circuit in the dash. This way the tach will light at night when your dash does. As for you cigarrette lighter...you might want to replace the entire socket with a new one..sometimes they just corrode and junk up. Also consider running an power wire from engine compartment and then using a splitter you can setup an additional fuse bank using the newer spade type fuses.
 
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