New IPA #9107B Electric Brake Force Meter (3rd Gen) w/Dynamic Load Simulation and Circuit Testing - for Use on New Model Vehicles

I own a 2022 GMC 3500 with seven PIN in the bed for towing a fifth wheel. If you're reading this you too may have a GMC and are chasing the dreaded "Check Trailer Wiring" message that comes along when your brakes in the trailer stop working. Question we've all had to ask: is it the truck, the wiring in between, or trailer batteries, generator, or solar? For me, this was invaluable for determining whether the fault was the truck brake controller or truck wiring. I wasn't crazy about spending $200 for this, but I reasoned that solving the problem would cost me a whole lot more without facts (not including liability cost if my brakes failed in route).This tool simulates a load of a trailer, tells you whether lights, signals, and brake lights are working as needed, and whether the brake controller is sending instructions as expected, when (is there latency), and brake force (either with the brake pedal or the brake controller).I went to this tool because lights on the end of a male plug wouldn't fire (no load was seen by the truck computer).What was really handy is I could test in Park and when driving down the road (while keeping my eyes on the road also).BTW, the GMC dealer uses a tool just like this for the same purpose. Problem is you need to pay them by the hour to do the analysis.

Works great. Much more comprehensive than the plug in LED indicators we're all familiar with. I needed it to troubleshoot a wiring issue due to corroded wires from the previous owners half baked "repair". Not something I'm going to need often, but invaluable when I do.

This is a must have for trailer brake maintenance can save so many headaches well worth the money

I have a 2024 X3 M40I, which has the factory tow package wiring included. I added an aftermarket hitch (StealthHitch which had direct plug-and-play installation to the factory wiring harness) and wanted a way to test out the 7-way plug. Initially I purchased an inexpensive LED 7-way tester - but that only showed that 12V power was coming through, and nothing else would illuminate as I cycled through turn signals, reverse, etc. Apparently the issue is that some vehicles look for a small electrical load in order to detect/send signal to the trailer lights, and most 7-way testers don’t supply the necessary resistance to facilitate testing.After some research, I came across the “IPA #9107B Electric Brake Force Meter”, mentioned to be a solution for testing the 7-way plug for newer German vehicles like Audi and BMW. I followed the instructions, but nothing illuminated at all (not even the 12V power). I was about to return it when I read a review stating that the “TOW READY 20142 7-Way Flat Pin to 7-Flat Plug to Plug Adapter” would provide the electrical resistance necessary for the vehicle to sense the trailer brake lights (or the testing apparatus, in this case). I plugged in the adapter, then plugged the inexpensive 7-way LED tester - and voila… everything works. Then I removed the inexpensive LED 7-way tester and plugged the “IPA Brake Force Meter” into the “TOW READY” adapter, and it also worked perfectly.I’m going to keep the “IPA Brake Force Meter” because the ultra long cable allows me to test from the drivers seat (versus crawling under the vehicle, using a mirror, or doing a video recording of the inexpensive LED 7-way tester). All in all - I wish I didn’t need an adapter to make this work, but I’m glad that I eventually found a solution.

Great way to confirm your brake controller is functioning and if not, helps you ID the issue.

Working by myself on a 2016 GMC 2500 HD, and replacing the trailer electronic plug, this trailer load simulator worked GREAT. The long wire to the plug being tested allowed me to sit in the drivers seat and "see" the brake, turn signal, and backup light circuits work (or not). Then, the factory e-brake system could be verified and actually preset with no trailer available, all from the cockpit. Glad I had this.

Good quality

This thing is great. If you are troubleshooting an issue with the trailer harness and brake controller wiring OR are just a paranoid dude like me and want to verify 100% functionality at the 7-pin connector prior to hookup, this thing is the answer! I use this every time I hook up my travel trailer for a trip when it's been a while. It gives me one less safety item to worry about.Not only do you get "idiot" lights showing connectivity, but you also get to verify that the brake actuation level is working correctly. This is the kind of test set I have come to expect from working on aircraft, and I have always been disappointed not to have it for my car. No more! :-)I also like that the part I'm most likely to break in the future (the actual cable assembly) is connectorized to the test set - and it uses an industry-standard D-sub to do it! That's class right there. So yeah, this is expensive, but it's going live forever, and I can repair the most likely failure point myself.Zero regrets about this purchase! Hats off to IPA - you guys rock!