150 Mercury Boat Tachometer Wiring Diagram

These codes apply to later model motors approximately early 80 s to present. Mount the tachometer so water will not collect on the face or drip on the case and wires. Collection of mercury outboard wiring diagram.

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Wiring color codes here is a listing of common color codes for mercury and mariner us made outboard motors.

150 mercury boat tachometer wiring diagram. Beginning with the tachometer fig. A wiring diagram is a streamlined traditional photographic depiction of an electric circuit. 1 here shows the back of a typical gauge. In this video i install an tachometer in my boat.

The wiring basics of connecting a tachometer rpm gauge to an outboard motor. At the top left of the diagram we see the cylinder selector switch. Drill a 3 3 8 in. If the number of poles is not known consult the outboard tachometer application chart or call faria marine instruments at 860 848 9271 with make model hp and year of the motor.

Merc v6 models 150 hp 175 hp 200 hp ser 5124981 to 5363918. Make sure this switch is set to the number of cylinders for your engine. It reveals the parts of the circuit as simplified shapes as well as the power and also signal connections between the devices. If the tachometer is covered by a transparent shield the shield must be adequately ventilated to help prevent sunlight heat soak.

Connect the boat harness wiring to the tachometer if it was disconnected in the repair process and reinsert the connected wires back into the tachometer dashboard hole followed by the tach itself. Outboards and some pre 2001 mercury 90hp outboards may require wiring a 1mf 100. Seat the wider face rim the front edge of the tachometer s exposed side the part that sits outside the dashboard against the hole edge and use. Outboard motor control wiring part 1.

This is the tachometer i used http. 1996 evinrude 40hp parts used in this test. Select a tachometer mounting location that is in full view of the operator. Most vendors will use one tachometer head to cover a variety of engines.

See diagram on the next page for connections. Outboard engine wiring series links. We have parts service manuals and wiring diagrams available for mercury outboard motors. I wire up the power and then select the number of pulse or cycles my outboard has to get the correct reading.

86mm hole in the dashboard.