Choosing Curt C51170 Spectrum or Redarc 331-EBRH-ACCV2 Tow Pro Brake Controller for 2019 Audi Q5

Expert Reply:

The controllers are fairly similar in that they're designed so that the user interface is very unobtrusive. No more ugly box hanging on the underside of the dash that you can bang your knee on. Both controllers use a small knob that can be mounted pretty much wherever it would be within the driver's reach.

Now, for the differences. The control knob of the # C51170 is quite a bit larger than that of the Redarc # RED44FR Tow Pro Elite, and it surface mounts. The Redarc would require a small hole but an optional bezel # 331-TPSI-001 is available to dress it up, and if your Audi has blank knockouts on the dash for switches they would make a great spot to mount the knob. Both controllers are proportional, but the Redarc also adds a 'user-controlled mode' which allows the controller to act in a time-delayed mode which can be helpful if you're towing off road. The Redarc includes the wiring pigtail, while you'd need to purchase the # C51515 pigtail for the Curt Spectrum.

If I were the one faced with the decision on which controller to mount in a luxury SUV, I'd choose the Redarc strictly because the control knob is smaller and more visually appealing. Either controller would work great for you, there's no wrong choice here.

To wire the controller, you'll need the brake controller installation kit, part # ETBC7 and a functional 4 pole trailer connector, part # 119190KIT.

expert reply by: Mike L

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