Just finished installing and testing a trailer brake controller on our NA Grenadier.
Went with the Redarc EBRH-ACCV3-NA Tow-Pro Elite Electric Brake Controller; as suggested by Mark @ Redarc. This is the same unit we had on our Defender.
I also needed to order a longer remote wire to move the remote head to the front dash area for mounting. The extension hasn’t arrived yet, so for now the remote is strung to sit between the drivers seat and the center console: RHWK-004 13ft Tow-Pro Elite Remote Head Wiring Kit.
On to the wiring…..
1. Under the back seat, on the passenger side, you will find 4 random wires for the brake controller.
Yellow/Red wire = 12v Constant - (REDARC Black Wire)
Black wire = Ground - (REDARC White Wire)
Grey Wire 12AWG = Control (REDARC Blue Wire)
Violet/Orange 14AWG Wire = Signal (REDARC Red Wire). EDIT: THIS WIRE IS CURRENTLY UNRELIABLE, KEEP READING FOR ALTERNATIVE SOLUTIONS. (It would appear INEOS did not properly setup the software to control this signal wire, so it should not be relied upon until INEOS issues a solution).
Instead, for the brake signal wire from the RedArc (red wire), I went down the path @pernsdorff has outlined on post #129 of p.7 in this thread as an alternative wiring method. I, did, also install the diode referenced by @rur42
You will need to access the right rear boot area, and locate the TRM (trailer module), to access the brake signal wire to tap in to; then run a wire from the TRM tap to up under the rear seat where the factory wires are located.
Trailer module location once the right rear panel is removed for access:
Once wiring was complete, I simply zip tied the head unit to the bracket under the seat. (Although, now I realize I’ll have to move it when I install the air compressor.
Then we went out for a test cruise around town, and the freeway. The Airsteam is 23’ and right about 6000 lbs, and we have a Pro Pride 3 weight distribution hitch. Everything seems to be working well. My initial impression is the Grenadier feels more planted than our 2020 Defender did, but it was simple flat towing around town. I am looking forward to our 1st official trip with this setup, and see how it does climbing some mountains/hills.
Went with the Redarc EBRH-ACCV3-NA Tow-Pro Elite Electric Brake Controller; as suggested by Mark @ Redarc. This is the same unit we had on our Defender.
I also needed to order a longer remote wire to move the remote head to the front dash area for mounting. The extension hasn’t arrived yet, so for now the remote is strung to sit between the drivers seat and the center console: RHWK-004 13ft Tow-Pro Elite Remote Head Wiring Kit.
On to the wiring…..
1. Under the back seat, on the passenger side, you will find 4 random wires for the brake controller.
Yellow/Red wire = 12v Constant - (REDARC Black Wire)
Black wire = Ground - (REDARC White Wire)
Grey Wire 12AWG = Control (REDARC Blue Wire)
Violet/Orange 14AWG Wire = Signal (REDARC Red Wire). EDIT: THIS WIRE IS CURRENTLY UNRELIABLE, KEEP READING FOR ALTERNATIVE SOLUTIONS. (It would appear INEOS did not properly setup the software to control this signal wire, so it should not be relied upon until INEOS issues a solution).
Instead, for the brake signal wire from the RedArc (red wire), I went down the path @pernsdorff has outlined on post #129 of p.7 in this thread as an alternative wiring method. I, did, also install the diode referenced by @rur42
You will need to access the right rear boot area, and locate the TRM (trailer module), to access the brake signal wire to tap in to; then run a wire from the TRM tap to up under the rear seat where the factory wires are located.
Trailer module location once the right rear panel is removed for access:
Once wiring was complete, I simply zip tied the head unit to the bracket under the seat. (Although, now I realize I’ll have to move it when I install the air compressor.
Then we went out for a test cruise around town, and the freeway. The Airsteam is 23’ and right about 6000 lbs, and we have a Pro Pride 3 weight distribution hitch. Everything seems to be working well. My initial impression is the Grenadier feels more planted than our 2020 Defender did, but it was simple flat towing around town. I am looking forward to our 1st official trip with this setup, and see how it does climbing some mountains/hills.
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![[ Adam ]](https://ineosforum-data.community.forum/avatars/m/9046/9046040.jpg?1705937698){kind=avatar}
(but likely lower left dash if accessible from driver position)
