Installing Brake Controller On 2009 Ford E-350 Van

Updated 03/30/2016 | Published 03/27/2016

Products Featured in This Question

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Ford

(348)

$18.01

10 Gauge Wire - Blue Primary - Per Foot

(104)

$1.84

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Ford, Lincoln, Mercury

(1793)

$18.95

Adapter 4-Pole to 7-Pole and 4-Pole

(659)

$61.55

Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional

(2763)

$159.19

40 Amp In-Line Circuit Breaker - Perpendicular Mount Bracket

(97)

$9.84

Question:

I have connector under dash.... Fuses and relays except for battery for trauler wires in place from factory... Looks like it just needs a relay in panel under hood.... 4 point connector under hood.... Wide connector at rear of vechile for lights. Question : what to look for at rear of vechile for trailer brake control wiring??

asked by: Ed

Expert Reply:

If the van has the factory installed 4-way connector, there will be a port under the dash for installing a brake controller. I recommend part # 90885 for a brake controller. You can then use a plug-in adapter like # 3035-P to connect the brake controller to the port under the dash.

Instead of connecting the blue wire from the controller to the adapter, you will need to extend the wire with a length of 10 gauge wire like part # 10-1-1 to run to the trailer connector at the rear of the vehicle. You will also need a 4-Way to 7-Way Adapter, part # 37185. If you need a 12 Volt circuit for any trailer accessories, you will also need to run a 10 gauge wire from the trailer connector to the positive battery terminal using a 40 amp inline circuit breaker, part # 9510.

If you have brakes on your trailer, which is typically why a 7-way connector is installed, you will need a brake controller.

I have attached a helpful article that explains in detail how to attach the wires and the connector