Hook up tach hei distributor

hook up tach hei distributor

Can I use a HEI distributor to power a tachometer?

NOTE: Make sure your tachometer has a common ground with the signal source (ECU). If you have an HEI distributor with a Tach Output you can use the Tach Output from the distributor. Due to the high voltage of the signal from the HEI you should use a tachometer filter to prevent damage to the tachometer.

Why won’t my tach work with my electronic distributor?

My factory tach will not work with my HEI or electronic distributor. HEI and other electronic distributors create a different signal or pulse then do original points style distributors. For this reason, your OEM tach that was circuited to read the latter, does not recognize and cannot read the signal it’s receiving from the newer style distributor.

Do I need a tach filter with a Hei?

Due to the high voltage of the signal from the HEI you should use a tachometer filter to prevent damage to the tachometer. If you have a modern vehicle with coil pack or individual ignition coils distributorless igntion you will need a tach driver like the MSD 8913 to drive the tachometer.

How do I connect a tachometer to a distributorless engine?

If you have a modern vehicle with coil pack or individual ignition coils distributorless igntion you will need a tach driver like the MSD 8913 to drive the tachometer. Connect the signal from the tach driver to SIG 1 (In-Dash Tach) or purple wire (Pedestal Mount Tach) input.

Can I use a tachometer filter with a HEI distributor?

If you have an HEI distributor with a Tach Output you can use the Tach Output from the distributor. Due to the high voltage of the signal from the HEI you should use a tachometer filter to prevent damage to the tachometer.

Why won’t my tach work with my electronic distributor?

My factory tach will not work with my HEI or electronic distributor. HEI and other electronic distributors create a different signal or pulse then do original points style distributors. For this reason, your OEM tach that was circuited to read the latter, does not recognize and cannot read the signal it’s receiving from the newer style distributor.

How do I connect a tachometer to a distributorless engine?

If you have a modern vehicle with coil pack or individual ignition coils distributorless igntion you will need a tach driver like the MSD 8913 to drive the tachometer. Connect the signal from the tach driver to SIG 1 (In-Dash Tach) or purple wire (Pedestal Mount Tach) input.

How do I hook up my tachometer?

How do I hook up my tachometer? If you have a standard ignition coil you can use the negative terminal of the coil for the signal source. Use the SIG 2 (In-Dash Tach) or green wire (Pedestal Mount Tach) input (see Signal Hookup in the instructions).

How do you wire a tachometer to a distributor wire?

Using the appropriate butt connector, install the distributor signal wire and the wire going to the engine into the connector and crimp it into place. Step 14: Connect the tachometer mounting spot to a good body ground. Run a new wire from the tachometer mounting spot to a good body ground located under the dash.

How do you install a butt connector on a tachometer?

Install the appropriate butt connector onto each of the wires and crimp them into place. Step 21: Connect each butt connector to a wire on the tachometer. Install each of the wire butt connectors onto one of the wires on the tachometer and crimp them into place.

How do you install a tachometer on an ignition coil?

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.

How does a tachometer work on a diesel engine?

With some exceptions, namely older diesels and Corvettes, most tachometers use electrical pulses from the ignition system to indicate an engine’s rpm. 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.

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