This is indispensable in trouble shooting trailer lights.

I've had mine for about 6 months now and will say if you own a trailer, rv or do repair on them. It's a must have. It checks drum brakes. Worth every dime.

So a tool of this type may not be a "must have" but is incredibly convenient to have. After seeing this product for sale, I figured that I'd just make my own version, but as close to being identical to this one as I could. Making it would only require a plastic ammo bin, some flasher relays, a few LED's, a few standard relays, a switching unit, wiring, terminals, & of course a couple various trailer plugs. Mine would have had a momentary button & a SPST toggle switch for each mode in order to keep that circuit on continuously. I wanted my kit to be made of all new parts, although I had pretty much everything needed to make a functional version that wouldnt be as aesthetically pleasing. So after pricing everything out, i would be in the $100+ region, & could just buy the unit for not too much more than that, so I decided just to get it.

It looked great, & seemed to have everything you need & nothing you dont. I got it out this morning to check out the operation. I plugged a 7-pin LED trailer test tool into the box just to monitor the output. Everything worked with the exception of the Right Turn (RT) mode. The Left Turn worked, & BTW, it has built in flasher relay(s) for the turn signals to blink as they would hooked to a vehicle. Anyway, something else that threw me for a loop was that on the switch, the RT mode was at the end of the 4 basic function list & was labeled "4 pin' whereas the LT wasn't (see pic). So being that it was brandy new & given the label of the switch, it actually occurred to be that for some odd & crazy reason, this tool did not have a RT output test mode!? Of course this made no sense. A long story short, I ended up taking it apart & gained access to the turn signal flasher relays. Having verified correct circuit output's, it was apparent that the RT flasher relay was not producing an output. Swapping relays confirmed it was a relay issue. I removed the flasher relay cover & following wiggling the input terminal, I could clearly see a solder-joint on the relay circuit board moving. With the switch on, I achieved intermittent relay function. So at this point, this unit had a faulty relay. I contacted the company (Innovative Products) & spoke with a tech rep, Luke. Luke ended up being a great guy to deal with & was very helpful. I explained my situation & what I'd done as far as diagnostics. I'm not implying that Luke condoned my opening the unit for myself as opposed to sending it in for company repair. Luke even went as far as verifying the wire color code's for me to check & verify relay failure. After we concluded faulty a faulty components, he proceeded to send me out a replacement flasher relay for the unit, free of charge. Now that's some great customer service. That experience gave me a great impression of not only the company but also the product!

I have been licking around buying this product for months. I recently ran into a problem on my 2003 Ram where I plugged into a trailer and it damaged the trailer turn signal relays inside the Power Distribution Center. That cost me a new PDC to the tune of $500. This tool would have saved me the money and time to replace the PDC. I tested it out on both of my trailers, one a Jayco travel trailer with incandescent bulbs and a Stealth enclosed car hauler with LED lights. It worked flawlessly on both systems. I like that I can test the lights whenever I feel the need without having to bring the truck out to do so. In both of my applications, I can also use this tool to check the interior lights as well on both trailers. My total cost for this unit and the GTX-14BS battery from my local O'Reilly's Auto Parts was just a tick under $200.

The instruction's were very clear with a nice message at the end from the owner of IPA. There is only one reference buried within the instructions for what battery to use. The GTX-14BS I purchased works and fits as advertised. I like to stay on top of all my pieces of equipment especially my trailers that don't see everyday usage. This will enhance my confidence in making sure the lighting and braking systems on both trailers is ready to go. I would highly recommend this unit!

The size and simplicity of the product makes it well worth its expense.