Installing Brake Controller On 2010 Mercedes-Benz Sprinter

Updated 03/04/2015 | Published 03/03/2015

Products Featured in This Question

Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires

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$118.67

Hook Probe Circuit Tester

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$14.40

Question:

I have 2010 Sprinter, It has the green plug under the seat, which I hooked the brake control to. I also installed a 7 wire plug into the factory harness but all that works is the 12v charge line and the brake control by the hand. I have no lights or brake at the plug. Help !Thanks

asked by: Brian G

Expert Reply:

When installing the Tekonsha P2 Brake Controller, part # 90885, you will need to test the green plug you found under the 2010 Sprinter seat with a circuit tester like part # PTW2993. You will want to make sure all of the functions exist in the wiring plug before splicing into the wiring to attach the brake controller harness.

I have attached an installation video for a brake controller on a Sprinter you can check out. The wiring should be very similar for your Sprinter. I have also attached some helpful articles on wiring, brake controller installation and troubleshooting brake controller installations you may want to take a look at.

expert reply by: Jeffrey L