Formula uOttawa Wiring Harness for GGR25-27

The first physical prototype of the wiring harness for the 2026 Formula uOttawa racecar being installed for testing and verifcation on the 2025 Formula uOttawa racecar. The new 2026 wiring harness includes newly installed shock-travel sensors along each suspension brace, wheelspeed sensors, brake temperature sensors, engine knock sensors, and new mounts for additional micro-controllers for CAN decoding, live data transmission, and an upcoming air-rake project in collaboration with Formula uOttawa Aero and Powertrain subteams. The harness is far from complete, with many signal connections yet to be fully validated and tested, and many additional refinements will be made to ensure the harness is regulation compliant and has enough foresight to simplify the redesign of the entire harness for the 2027 season.
Home
Questions?
hero-image

Samuel Li

Project Timeline

Sep 2025 - Current

HighlightS

December 2025: Identified key issues with Master Switch system, and greatly reduced complexity

January 14, 2026: Discussion regarding switch to EV will likely influence new changes to the harness to shift development into the direction of EV

January 21, 2026: First look into Cylindrical vs Pouch Cells for accumulator project 2027, full report and presentation to be submitted by Accumulator R&D Team Febuary 3, 2026

Feburary 6, 2026: Major teardown of the GGR25 Wiring Harness

SKILLS

Wiring
Solidworks CAD
Solidworks Electrical
Rapidharness
Microsoft Excel
CAN protocol
RF

Additions to the GGR25 harness:

  • Wheel Speed Sensors
  • Infrared Brake Temperature Sensors (via CAN bus)
  • Intake Air Temperature Sensor
  • Linear Potentiometers (shock travel data for aero and suspension subteams)
  • New GPS installed (old one kept glitching)
  • MoTec M150 ECU CAN permissions adjusted to support 3 CAN busses (to be adjusted to 1 primary bus in 2027)

Additions for GGR26 harness:

  • Exhaust Gas Temperature Sensors
  • Engine Knock Sensor
  • Aero grate for pressure diagnostics (per Aero subteam request)
  • Second Throttle Position Sensor in preparation for Electronic Throttle Control in 2027
  • Wifi Bridge via ethernet paired with Rasberry PI 5 to transmit data files from AiM MXG Dash/Data Logger and MoTec M150 ECU to pits.harness.jpgfsaeharness3.jpgfsaeharness6.jpgEngine.drawio.pngIMG_5984.jpgoscilloscope4.jpg
| lowinertia |
Engineering Portfolio in 15 minutes
Create Your Portfolio