Installing a Trailer Brake Controller in a 2008 Lexus RX 350

Question:

I have a brake control which I removed from a previous car and want to install on my new car. I would like to install it with the ability to unplug and remove it when not is use. what wiring plug pair is available to do this?

asked by: Keith F

Expert Reply:

In order to install a brake controller in your 2008 Lexus RX 350, you will need to hardwire it in. There isn't a plug-in harness available for your vehicle. The first thing you will need is a 4-Way flat trailer connector, # 18002, unless your Lexus already has one. I have linked a video showing how it installs.

After the 4-Way is installed, or if the vehicle already has a 4-Way, you will need to install a 7-Way. Use # ETBC7 which comes with the 7-Way and the wiring and accessories needed to install the brake controller. I have included some links that show and explain the ETBC7 installation for you.

If the vehicle already has a 7-Way then you will need installation kit # 5506 instead of ETBC7. But you can still follow the relevant parts of the ETBC7 links I have provided to install kit 5506.

With that said most controllers have a wiring harness that you would hardwire to the vehicle and plug in the controller. I would need to know which brake controller you have to recommend the correct harness.

expert reply by: Michael H