mercury marine tachometer installation

• 2023-07-18

Mercury marine tachometer installation method:

1. The red line is the power line of the tachometer. As the clock of the tachometer needs to work continuously, the red line must always be powered and can be connected behind the power fuse.
2. The black wire, the ground wire of the tachometer, can be connected to any ground wire.
3. The yellow line is the working line of the tachometer. After the yellow line is powered on, all parts of the tachometer begin to work, and the lights on the panel light up. The yellow wire is connected to the power cord behind the ignition key switch. After turning on the key switch, the tachometer begins to operate.
4. The green wire, the signal wire of the tachometer, is connected to the trigger signal terminal of the igniter. The digital tachometer uses light-emitting diode (LED) and Nixie tube as display devices, and built-in high-performance single-chip microcomputer as signal processing and control unit. It is small in size, powerful in function, accurate in measurement, and exquisite in display effect. According to the different usage occasions, it can be divided into two types: for automobiles and motorcycles, with the main characteristics.

Connect the high-voltage primary of the igniter, and the ignition voltage is around 200V. If your tachometer is not designed for high voltage sensitivity, the display will be inaccurate. The pulse signals of the tachometer generally come from three sources: one is the trigger signal, one is the ignition high-voltage primary, and the other is the AC output of the magneto. The connection method between the tachometer and the igniter of a motorcycle engine includes mechanical and electronic tachometers.

How to wire the proximity switch on the tachometer? Proximity switches are a category within sensors. Sensors are their collective term. The speed sensor is a sensor that controls the electricity and oil of the engine. The computer collects signals from the sensor and sends power and fuel supply signals to the engine. When the sensor is damaged, it will not be able to transmit signals, so the engine cannot start. The location of the tachometer sensor is due to the fact that the sensing plug is originally sealed layer by layer. It may be due to a damaged rubber ring inside, which may cause oil leakage, or the plug is prone to oil leakage. Both are vulnerable parts, which is normal. It is good to replace one. When replacing it, the value should also be different, otherwise it will cause insufficient oil pump pressure and oil leakage.