GP1800 2018-2020 adapter harnesses

8 products

  • 2.5ft harness for oil pressure monitoring

    Karel Tuning 2.5ft harness for oil pressure monitoring

    5 in stock

    This sub-harness plugs into the oil pressure sensor connector in the main harness and allows monitoring of oil pressure in applications that use a sensor with a Metri-Pak style connector. Fits: Yamaha GP1800 series main harness Yamaha FX series main harness Yamaha FZR series main harness Note: Oil temperature cannot be monitored with this adapter harness.

    5 in stock

    $45.95

  • 2ft sub-harness for tunnel pressure sensor

    Karel Tuning 2ft sub-harness for tunnel pressure sensor

    5 in stock

    This harness allows logging and monitoring of tunnel pressure when using our Yamaha WaveRunner harness. Fits: Yamaha GP1800 series main harness Yamaha FX series main harness Yamaha FZR series main harness Please refer to the main harness documentation for proper ECU pin settings and calibration.

    5 in stock

    $46.95

  • Adapter harness for Bosch knock sensor

    Karel Tuning Adapter harness for Bosch knock sensor

    5 in stock

    This harness allows connecting to a Bosch-style two-wire knock sensor when using our Yamaha WaveRunner harness. Fits: Yamaha GP1800 series main harness Yamaha FX series main harness Yamaha FZR series main harness Please refer to the main harness documentation for proper ECU pin settings and calibration.

    5 in stock

    $44.50

  • Last stock! Adapter harness for Bosch LSU 4.9 wideband sensor

    1 in stock

    $31.00

  • Last stock! Adapter harness for NTK wideband sensor

    1 in stock

    $31.00

  • Ignition bypass adapter harness

    Karel Tuning Ignition bypass adapter harness

    5 in stock

    This adapter connector allows turning on the ignition system on our Yamaha harnesses when performing firmware upgrades, datalogging or any operation that requires the system to be powered without the engine turning. Also allows connecting to the ECU via Wi-Fi during tuning sessions without the need for a USB cable. Fits: Yamaha GP1800 series main harness Yamaha FX series main harness Yamaha FZR series main harness

    5 in stock

    $10.95

  • Nitrous sub-harness with solenoid and bottle pressure sensor connectors

    Karel Tuning Nitrous sub-harness with solenoid and bottle pressure sensor connectors

    5 in stock

    Connects to our main harness on the Yamaha GP1800 and FX series and enables the use of a nitrous solenoid and also provides a connection for a nitrous pressure sensor to the ECU.  

    5 in stock

    $68.00

  • Voltage regulator charging harness for Yamaha WaveRunner 18+

    Karel Tuning Voltage regulator charging harness for Yamaha WaveRunner 18+

    5 in stock

    This harness connects to the voltage rectifier on Yamaha GP1800 and FX models 18+. It provides stable amperage and a clean installation. It works with our main harness and connects directly to the battery.

    5 in stock

    $45.95

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