Tekonsha are probably the most popular:
All of theirs are inertia sensing types.
With most you normally need access to the bottom for gain adjustment.
Envoy is a nice little unit. I recommend Prodigy.
You need the GM brake Control wire harness too if you don't already have
Check Ebay for some good prices.
There is only one "REAL" brake controller made.
Yes, it is expensive, but you either want control of you trailer brakes or you
All others have no direct relationship to what your right foot is doing.
There is a another that works reasonably well:
I'll ditto the Prodigy. Easy to install and adjust and works great.
I installed it right beside the center console and between the
steering column on the slanting area of the lower dash; i.e. right
beside my right knee.
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