Integrated Brake Controller - retrofit?

[Chris]

I have a 9300 pound tandem axle toy hauler with electric brakes. The dodge has a P2 my sierra has a P3. Both worked. I prefer the P3. First tried it Wednesday. The P3 is easy to use and adjust. It can also save multiple trailer settings

 

 

So a P3 is convenient for a trailer whose load would significantly vary in weight

 

P2 can work with E/H brakes

 

IQ is for electric only.

 

In a nutshell?

In a nutshell buy the P3 and be happy. It will do everything you want plus some. You change trucks it goes with you. The P2 and P3 only had like a $20 price difference. I wouldn't get the IQ. Also the P3 can do Electric or Hydraulic brakes. I don't think the P2 can

 

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