Trailer brake control

mike-s wrote:
With both the Tekonsha P2 and P3, the manual control is proportional to how far you move the lever.

Yup.

P2 owner here.

wa8yxm wrote:
I would say NO, since the brake lights are operated by the tow vehicle brake light switch.. The lever only applies trailer brakes.

The controller is wired to the brake light switch, and uses that connection to not just sense when the vehicle brakes are used, but to also activate the brake lights when it's manually triggered.

I would say NO, since the brake lights are operated by the tow vehicle brake light switch.. The lever only applies trailer brakes.

Old-Biscuit wrote:
Only difference between 'manual' and tow vehicle activating trailer brakes is when using tow vehicle brake pedal trailer braking is proportional.
When using the 'manual' lever the trailer brakes receive FULL battery voltage

With both the Tekonsha P2 and P3, the manual control is proportional to how far you move the lever.

YES

Only difference between 'manual' and tow vehicle activating trailer brakes is when using tow vehicle brake pedal trailer braking is proportional.
When using the 'manual' lever the trailer brakes receive FULL battery voltage

Trailer brake lights function in either mode

Per Tekonsha
That's actually part of how the brake controller is designed. It does that so that if you were towing a trailer and you were applying the manual override to slow yourself down without touching the vehicle brakes drivers behind you would know that you were slowing down. Its a safety feature and everything is working as it should.