orion bms jr2 controller image
orion bms jr2 controller image
orion bms jr2 controller image
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Orion BMS JR2 - Replacement Harnesses

Orion

Orion BMS JR2 - Replacement Harnesses

Harness
Harness: Main I/O - Orion JR2 BMS w/CAN
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$49.00
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Orion JR2 Replacement Harnesses

OEM-grade replacement harnesses and interfaces for the Orion JR2 (48 V class, 1–16S). Choose Main I/O, Cell Tap, Current Sensor + Thermistors, and optional PC interfaces for programming and CAN diagnostics.

  • JR2 Controller compatible
  • Automotive-grade connectors
  • Correct pinouts & labels
  • Built for EMI hygiene

Quick selector

Main I/O Harness

Primary I/O harness for Orion JR2 controllers.

Part SKU Use Compatibility
Main I/O Harness CWHJRMC2 Controller power, contactors, inputs/outputs Orion JR2 only

Cell Tap Harness

Connects JR2 cell-sense inputs to your 1–16S pack.

Part SKU Series Range Compatibility
Cell Tap Harness CWHJ2166 1–16 cells (JR2 header) Orion JR2 only
Tip: Verify tap order before connection. A Cell Wiring Validator prevents first-power-on wiring faults.

Current Sensor Harness w/ Thermistors

Pre-terminated current-sensor connector with thermistor leads for pack temperature sensing.

Part SKU Included Compatibility
Current Sensor Harness w/ Thermistors CWHJ2CUR Thermistor tails (pre-wired) Orion JR2 only

Pair with the appropriate Hall-effect sensor (e.g., CS118200, CS124500B, CS133800B, CS1371KB) to match your current range.

Programming & PC Interfaces

Cables/adapters for configuration and diagnostics with a laptop.

Part SKU Use Compatibility
RS232 → USB Programming Adapter — Direct PC programming/config (JR2 RS232 port) Orion JR2
CANdapter (USB-to-CAN Interface) — CAN diagnostics/logging, live telemetry Orion JR2 (also Orion O2 family)
Driver/Setup: Install the vendor USB drivers. For CAN, match bitrate and filters to your JR2 config; for RS232, set the COM port and baud per the JR2 utility.

Selection & installation tips

  • Match to JR2: These harnesses are designed for Orion JR2 (48 V class, 1–16S).
  • Programming: Use RS232→USB for configuration/firmware with the Orion utility.
  • Diagnostics: Use CANdapter for live CAN telemetry, logging, and service tools.
  • Routing & EMI: Keep tap leads away from HV busbars/traction cabling; avoid long parallel runs with high dI/dt conductors.
  • Strain relief: Support harness weight near connectors; avoid tight radii and torsion at the shell.
  • Thermistors: Bond probes to representative cells/modules; log temps over CAN (if equipped) during commissioning.

Helpful add-ons

FAQs

Are JR2 harnesses compatible with Standard/Orion 02 controllers?

No. CWHJRMC2, CWHJ2166, and CWHJ2CUR are for Orion JR2. Use controller-specific harnesses for Standard/Orion 02.

How do I verify the cell tap sequence?

Use a validator or meter the tap ladder end-to-end before connecting to JR2. Confirm ascending voltages per the wiring manual.

Which interface should I use for setup vs. diagnostics?

RS232→USB for programming/configuration; CANdapter for live CAN telemetry, logging, and diagnostics.

Can I extend these harnesses?

Keep extensions minimal; use shielded cable where appropriate. Excess length increases noise pickup and voltage drop.

 

Pickup available at EVolve Electrics Office

Usually ready in 24 hours

Pairs well with