jacob Posted February 27, 2014 Share Posted February 27, 2014 I have a sunpro tach that I want to set up but there's no wiring harness and fuse box so ive got the power going to the kill switch the side that goes to the battery. the red wire goes to the distributor where it says tach, the ground wire runs to where the tachs mounted is that the correct way to do that? Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted February 27, 2014 Share Posted February 27, 2014 I cant remember the wire colors but one goes to + side of coil one to a good ground and one to fues block spot that only has power when key is on. Is it lighted also? mine is wired to dimmer switch for light and thats also where I grounded it too. I can check to see if I still have wireing instructions. Quote Link to comment Share on other sites More sharing options...
Sam (Bones) Posted February 27, 2014 Share Posted February 27, 2014 a sun tach should have a... Â red wire, 12volt ignition, power with key on black wire, ground green wire, negative side of coil, or tach terminal on a HEI white wire, for the light in the tach Quote Link to comment Share on other sites More sharing options...
footballubet Posted February 27, 2014 Share Posted February 27, 2014 That's how mine was wired up. Quote Link to comment Share on other sites More sharing options...
jacob Posted February 27, 2014 Author Share Posted February 27, 2014 alright that's what I thought I just don't want to blow any thing up... Sam I love the way your car looks Quote Link to comment Share on other sites More sharing options...
Hoodicoff1 Posted February 27, 2014 Share Posted February 27, 2014 tie the redwire to the ignplug on the fuse box white to the ilum plug in the fuse box and the green to the - side of the coil or the "tach" connection on your HEI distributor Quote Link to comment Share on other sites More sharing options...
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