Description

Of all the combinations available, the Superharness is a pretty good place to start! It supports the Micro OLED Display with connectivity to your Phaserunner/Baserunner motor controllers, the Digital Regen Brake Cable and even power for front/rear lights. This little magic box is also really, really compact, so can be tucked between hydraulic/brake lines.

Linking multiple components through one unit simplifies your wiring formula, whilst integrating the core functions required to get your rig rolling through the Phaserunner Suite. The 9 pin mains plug for Phaserunner/Baserunner motor controllers and support for industry standard ebike displays operating on the KM5s display protocol is included.

• Supports proportional regen
(including via analog brake levers/ digital brake cable)
• Controls Front Light from Display, upto 1.5 amps at battery voltage
• Rear Brake Light Option changes mode when brakes are active
• All Waterproof Higo Connectors LED Feedback, three LED lights provide status output for troubleshooting
• Compact Design Overmolded circuitry

Connections:

Here is the plug standard for the device:

Main9
This hookup matches the 9 pin plug present on the V4 and later Phaserunner and Baserunner motor controllers. However, the firmware to properly support 3rd party displays is only present on the V6 motor controllers.

Displays
The display plug is a 5 pin female Higo, using one of the 3 common pinout standards. Connection to a display with the same pin style but a different pinout will almost always damage the display, harness, and motor controller as the full battery voltage pins are swapped around.

Throttle
The throttle plug is a 3 pin female Higo in the most popular industry format. This supports regular throttles with a 1-4V signal ranges, as well as bidirectional throttles with a 1V center point that go down to 0V for regen control. The Phaserunner Suite manages the limit for throttle speed separately from the PAS/Torque sensing elsewhere, so remains compliant with legislation in the UK.

Ebrake
The ebrake connector is a 4 pin female Higo and includes both a digital input and an analog input pin to support both ebrake styles. All of Grin’s Higo ebrake plugs use this standard. There is also a 4 pin to 3 pin adapter cable to use a 2nd throttle as the regen brake control, plus 4 pin to 2 pin adapters for compatibility with ebrakes sourced elsewhere.

Front DC Power
The front DC power port is a 5.5×2.1mm jack designed primarily for front lights, and can be configured to be always on or turned on and off with the display. It outputs full battery voltage at up to 1.5 amps. Devices with high inrush current may trip the overcurrent protection circuit.

Rear DC Power
The rear light control also uses a 5.5×2.1mm jack and has the same current capability as the front light, and this can be further configured to act as a brake light, going from flashing to steady mode or visa versa when the ebrake is engaged.

Programming
There is also a TRRS port on the superharness that is used for programming the firmware and debugging. If this is connected to one of Grin’s USB->TTL cables and hooked up to a terminal program set to 9600 baud, a steady stream of data will be seen showing the state of all the signals in and out of the superharness.

Compatibility:

Full functionality of the Superharness and display requires a V6 Phaserunner or Baserunner motor controller with at least the 6.025 firmware installed. Controllers sold before 2023 typically had 6.023 firmware, which has a bug preventing the assist levels from properly toggling up and down. The V4 and V5 baserunner controllers also have a 9 pin mains plug, but these run an older 5.9XX ASI firmware that can’t be updated to 6.XX because they use a more limited microchip.

W-M9SHarness