Is Brake Light Relay Required for 2017 GMC Acadia Flat Tow Wiring Harness?

Updated 08/20/2020 | Published 08/17/2020

Products Featured in This Question

Curt Custom Base Plate Kit - Removable Arms

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$483.95

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord

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$173.39

Roadmaster Stop Light Switch Kit

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$43.01

Roadmaster Brake-Lite Relay Kit for Towed Vehicles

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$47.71

12 Volt Outlet Kit, 20 amps

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$36.01

Question:

Do I need this relay kit RM-88400 on my 2017 GMC Acadia not Limited when installing the RM-15267 wiring kit with diodes?

asked by: Kenneth W

Expert Reply:

When installing the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 you will not need the # RM-88400 for your vehicle. Depending on the supplemental braking system you may need the Stop Light Switch # RM-751483 and/or 12 Volt Outlet Kit # RM-9332.

expert reply by: Jason S