6562 7-Way Blade Tester and Trailer Emulator, w/LED Display

Works, LEDs are not very bright which makes it hard to view in any amount of daylight.

This tester works great for testing my Tekonsha P2, but when I used it to test my 2012 Avalanche with GM's Integrated Trailer Brake Controller (ITBC) it did not work. The Avalanche ITBC system responded to this thing as if there were no electric brakes connected, instead of immediately presenting the "Trailer Connected" message. I would have rated this product with five stars had the verbiage in the Amazon description been a little more forthcoming on the incompatibility with the GM OEM braking system. In case anybody is wondering (since I had to figure this out through trial and error) the GM ITBC is looking for a significant current draw and was finally happy when I connected a 12VDC hand-held spot light (the kind sold by auto-parts stores with cigarette lighter plugs). Do not use a low-current (< ~2 amps) lamps. The spot light hack that is necessary for the GM ITBC WILL NOT WORK for testing the Tekonsha aftermarket EBCs, because their circuitry is offended by the extremely low resistance (i.e. nearly dead short) of an unlit lamp filament and thus they will indicate a short-circuit at the control head. Bottom line, if you need to test your 7-way Tow Vehicle trailer outlet and you have a Tekonsha aftermarket Electric Brake Controller, you will need this device. If you are testing a vehicle with other than the Tekonsha aftermarket controllers, a "no joy" indication on this device DOES NOT necessarily mean your vehicle's brake controller is kaput.

2012 Ford F250 6.7l turbo diesel. My Brakes and manual override brakes on RV are not working, but everything else does seem to work on the RV 5th wheel. I got my tester today and it confirmed my manual test I did yesterday with a dc light probe and multimeter, probably took 15 minutes to do. I do get the voltage change when I manually squeeze the brake controller in the truck from zero to 12 volts(using a light and multimeter in conjunction with each other). The issue appears to be with my RV and not my Ford integrated brake controller. Doing the test with a multimeter and a probe takes a some time and is a pain, but it will give you the volts, which is important to know. This tester will NOT tell you the volts, but the led light does get brighter the harder you press. You can also see the led brake light come on when you press the brake pedal. It you push it hard, you will see the led get brighter as well. From my understanding, you can't test this well unless the vehicle is moving more than 11 mph, since the trailer brakes will not activate under 11mph. This tester makes it very easy to do a quick semi detailed test. I think I have a bad ground on my Trailer. Still need to figure that out. This probe will NOT help with any issues with your trailer wiring...stating the obvious. It will just give you piece of mind that everything on your tow vehicle works/does not work. I keep my RV 45 minutes away, so doing this quick test before I leave the house is a real bonus. I will also point out(like another reviewer did) that the cheaper testers don't work well, because they don't put a load on the system and the truck does not think it has anything in tow. This tester DOES put a load/resistance on the vehicle so it things the trailer is really hooked up. In my ford, there is an app that will show you if your trailer is hooked up(shows the miles driven and the gain). I plugged this in an drove around the block. It did show "trailer connected" message and the miles driven went up, showing that it really did think my trailer was attached. Nice product.

Wired up a trailer brake on the truck, and the wife reported it wasn't working. This little widget proved that the wiring was correct and the problem was in the (borrowed) trailer.Only downside is the black on black labeling on the unit makes it really hard to read. Once you know what you're looking at it's not so bad, but trying to stick someone behind the truck and asking them "which light came on?" leads to a lot of frustration when they can't read it.

Love this - saved me time and $ in trying to diagnose an issue.When I connected to a trailer I was looking to buy (3 actually) and the first one - my P3 did not recognize a trailer... so I ordered this (to determine if this was a hitch or a trailer issue) , and it turned out that I had a short in one wire going to my hitch. No Bigie, fixed it, and my P3 works perfectly with this connected...I connected to another trailer I was looking to buy...P3 didn't register the trailer, connect the tester, all things are good - turned out to be a wiring issue on the trailer (that the seller magically remembered once I brought it to his attention)and finally, when I connected to the trailer I actually bought...all things were good with the P3... this device saved me time and money1 - proving that my wiring was bad...so focus there first2 - proving that a trailer had bad wiring before buying it ...and proving my wiring was good3 - peace of mind that all is ready to go before connecting the trailer...this is for my 2000 Chevrolet Silverado Z71 with factory wiring.

This tool is a great little tester to simply plug in before taking a trip. It lets you know that the tow vehicle is ready, so if you hook up & a light on the trailer or something doesn't work, you know it's the trailer. Also it beats standing on your head with a voltmeter trying to hold the probes & read the meter at the same time. The 1st time I tried this thing, I found my charging circuit was dead because the folks that wired my Jeep had only used a 10 A. fuse. It probably blew when I hooked up to come home on my last camp trip. (It has a 30A fuse now) I almost deducted one star on my rating. It's well made & should last forever, but the little raised letters by the LEDs are very small & not raised enough to read very well. under average conditions, I can't read them at all. I rubbed some white paint over them & now I can see them a little but they need to be bigger. If this doesn't pan out, my next fix? will be a little diagram taped to the body with clear tape.