Installing a Tachometer to a Coil | It Still Runs A tachometer is a fun accessory to add to a performance car that is not difficult to install. Originally developed for steam locomotives, they are now used in the aircraft and automotive industry. A tachometer is designed to gauge the engine RPM, or revolutions per minute. For example, the crankshaft completes 3,000 Connecting Tach to Coil - YouTube Click to view on Bing2:05Connecting Tach to Coil Stan Calame. Loading.. Unsubscribe from Stan Calame? how to install wire up a tach tachometer the right way GM for beginners DIY - Duration: 9:29.Author: Stan CalameViews: 9K How to Install a Tachometer: 8 Steps (with Pictures) - wikiHow MethodWarningsThings Needed Get a tachometer and splicing connectors. You can either buy a tachometer new, which usually run somewhere between $30 and $50, or salvage on old one for relatively cheap and install it into your car. The only other specialty item you'll need to complete the job is a package of quick-splice connectors, which are usually only a few dollars at the auto part store. The wires are about 16-18 Adjust the tachometer for the number of cylinders in your engine. New tachometers may be set to wSee all 4 steps on wwwhow How to Install a Tachometer - OnAllCylinders Tachometer installation can be as simple as connecting the tach’s sending wire to the negative side of the ignition coil, while other ignition systems feature a dedicated tach sending circuit. In either case, installing the tachometer incorrectly can cause significant damage to both the tach and ignition system.