HOPPY 42465 1997-01 trialer wiring

Any known issues ? Just picked one up and installed it. Seems to be OK, all the signals, directionals, brakes, parking and backup work. Have not hooked it up to a trailer yet, borrowing one a few times over the next few weeks for lumber yard, tractor and snow blower transportation into the shop for repairs. Both the adapter and the trailer have flat 4 connectors. Note on the instructions say that a heavy duty flasher may be required to eliminate rapid flashing...
Anybody know what the pinout is supposed to be on a flat4 connector, I'd like to throw a meter on the ouput before I plug it into anything...
Would have preferred the Jeep one but the dealer no longer lists the darn thing for the XJ...shoulda bought it when back when I first got the jeep, aw well, hindsight...

Can't say I ever sold that one when I worked at the RV dealership. I'm supprised it didn't come with a wiring diagram but with only 4 wires I'm sure you could figure it out. One's ground, one's tail/brake, and the last two are turn signals.
Billy

The pin that's the opposite of the other three is ground. The pin on the other outside of the connector is brakes, and the center two are left and right blinker. Doesn't the Hoppy instruction sheet include that info? It's been a long time since I looked at one.

My hoppy says what it is right on the wires next to the plug. Mine works wonderful and mine already had a heavy duty flasher b/c its not rapid and i dint change a thing.