Just picked up a tack for my console for my 67 skylark, anyone know how to wire these? I never had one of these, from what I have researched: tach wire goes to the negative of coil Light bulb to positive 12 volts Body of tach is grounded to frame Is this correct? Thanks Lawrence
Lawrence, you got it that's correct just make sure you have a good ground. On the factory engine wiring harness there might be a light brown wire wrapped up near the coil. I just put a new harness in a friends 67 gs400. If it has the factory wire lead then look at the fuse box on inside under dash for that brown wire. If so you may be able to connect it there from your tach otherwise just run the wire through somewhere in the fire wall to the negative side of coil. Good luck Jon
