This harness completely replaces the OEM harness in the Yamaha WaveRunners GP1800 models from 2017-2022. We have perfected this design through years of racing and development. Completely waterproof when used as recommended and slim design packed with many features like:
Plugs to a Haltech Nexus S2 latest generation programmable ECU
Boost control solenoid output
Ride control (Reverse)
Trim control
Auxiliary fuel pump support
Bilge pump
Compatible with OEM 2021+ dash and Haltech dash
Nitrous solenoid control
Nitrous bottle pressure
Oil pressure
Oil temperature
Tunnel pressure monitoring via adapter harness
Rotary trim input
Auxiliary switch input
Compatible with OEM DBW throttle body. Compatible with Bosch throttle body via adapter harness
Knock sensor control
Flex fuel sensor ready
GPS input ready
Compatible with low impedance injectors
Traction control
Rolling launch
Compatible with both Bosch and NTK wideband sensors
These harnesses have been winning races since 2011 and are a tested product. They come completely sealed with the basic functionality but can be easily expanded using our plug and play adapter harnesses in order to connect to any sensors the end user requires.
Full documentation and pinout is provided for easy troubleshooting as well as a complete catalog of every connector, contact and seal on our website.
We provide a base map with the purchase of every harness.
For applications that require additional functionality than what the base harness comes with, we recommend purchasing the correct harnesses from the list below:
YAM-GP-REG-H-00
Voltage regulator charging harness for Yamaha WaveRunner 2018+. (This harness is required for any application that runs a 12V battery and OEM stator)
HT-010726
Adapter harness for Bosch LSU 4.9 wideband sensor (Sensor sold separately)
HT-010727
Adapter harness for NTK wideband sensor. (Sensor sold separately)
YAM-GP-TUNNEL-H-3F
2ft sub-harness for tunnel pressure sensor (Sensor sold separately)
YAM-GP-OILP-H
2.5ft harness for oil pressure monitoring (Sensor sold separately)
