Aftermarket Tachometer Wiring

Though this method delivers an accurate reading installing a new tach can be confusing because of the different ignition systems used by the oems and the aftermarket. According to the permutation formula will be obtained. Y all have been so helpful this past year.

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Black green and yellow wire will be connected to.

Aftermarket tachometer wiring. 3 factorial 3 x 2 x 1 6 combination possibilities. I bought an aftermarket speedometer tachometer. This video demonstrates how to wire a tachometer on almost any vehicle with efi. Start the motorcycle and watch the tachometer.

Then we create a list of 6 combinations of wiring connection. Tighten the bolt down on top of the wire to keep it in place. Connect the white wire to this wire using a crimp on wire tap. Negative or body or ground.

Run the white wire from the tachometer to the wiring for the instrument lights. Close the two halves of the connector around the white wire and the instrument light wire. It has its wiring labeled but i m not positive how the original connectors connect to it. In this video i wired it up on a 1997 toyota tercel.

Loosen a bolt near the engine such as a hardware mounting bolt or cylinder head bolt. Positive as a power source for the tachometer to work. Omw y all are awesome. Set the end of the ground wire underneath the head of the bolt.

Squeeze the metal tap on the connector down with a pair of pliers and snap the cover on the connector closed. 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.