150 Mercury Boat Tachometer Wiring Diagram
At the top left of the diagram we see the cylinder selector switch.
150 mercury boat tachometer wiring diagram. In this video i install an tachometer in my boat. See diagram on the next page for connections. Mount the tachometer so water will not collect on the face or drip on the case and wires. Outboard engine wiring series links.
86mm hole in the dashboard. Beginning with the tachometer fig. Outboard motor control wiring part 1. It reveals the parts of the circuit as simplified shapes as well as the power and also signal connections between the devices.
The wiring basics of connecting a tachometer rpm gauge to an outboard motor. 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. Outboards and some pre 2001 mercury 90hp outboards may require wiring a 1mf 100. If the tachometer is covered by a transparent shield the shield must be adequately ventilated to help prevent sunlight heat soak.
This is the tachometer i used http. Drill a 3 3 8 in. 1 here shows the back of a typical gauge. Select a tachometer mounting location that is in full view of the operator.
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. Wiring color codes here is a listing of common color codes for mercury and mariner us made outboard motors. Make sure this switch is set to the number of cylinders for your engine. I wire up the power and then select the number of pulse or cycles my outboard has to get the correct reading.
Collection of mercury outboard wiring diagram. Most vendors will use one tachometer head to cover a variety of engines. We have parts service manuals and wiring diagrams available for mercury outboard motors. 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.
These codes apply to later model motors approximately early 80 s to present.