Installing Trailer Brake Controller on 2015 Thor Axis Motorhome

Updated 04/29/2019 | Published 04/25/2019

Question:

hi on a 2015 thor axis where do I find the trailer brake plug under the dash and will your 3034-p harness work for me? Thank You

asked by: Lloyd W

Expert Reply:

As long as your 2015 Thor Axis (which was built on the Ford E-350 or E-450 chassis) features a factory 4-Way or 7-Way connector at the rear then there will be a factory port behind the dash that will connect to the Plug-In Adapter # 3034-P. This port is specifically located behind the access panel in the center of the dash. You will need to carefully pry this panel out and undo the locking tabs that are keeping it in place. The mating connector to the Wiring Adapter will be behind this panel.

For the brake controller itself to use with this harness I recommend the Tekonsha Prodigy P2 # 90885 because of its easy to read display and continuous diagnostics that will alert you to any potential issue on the road. I have attached an installation video that you can use for reference.

expert reply by: Chris R