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Search Auto Parts Search 1976 chev p/u factory tach wiring Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Automotive Wiring and Electrical bagman New User Dec 16, 2005, 4:25 PM Post #1 of 3 (1829 views) 1976 chev p/u factory tach wiring Sign In I have a 1976 chev 1/2t 4x4 that has had a factory tachometer added. The problem is while wiring up a new stereo the wire's have come loose on the back of the tach. I just need to know which one goes where. Please help. DanD Veteran / Moderator Dec 17, 2005, 8:43 AM Post #2 of 3 (1824 views) Re: 1976 chev p/u factory tach wiring Sign In Sorry I don’t have any diagrams that old, but it can’t be all that hard to figure out. You’ll have a signal wire from the ignition coil negative and on a HEI system the distributor cap will be marked TACH. A 12-volt feed with the ignition switch in the run position. Possibly a light circuit that will have voltage to it with the parking lights on. Then a ground for the system. After you figure out what wire is what, you should be able to trace the printed circuit on the back of the tach and see where they go. I know I’m simplifying this but a wiring diagram is only going to show you what color wire is what, not where they actually connect to the tach. Dan. Canadian "EH" Tom Greenleaf Ultimate Carjunky / Moderator Dec 17, 2005, 10:19 AM Post #3 of 3 (1820 views) Re: 1976 chev p/u factory tach wiring Sign In This is tough with aftermarket anything. If it happened when a radio was installed I would simply look for wires that are disconnected. Just a shot, - T   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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