LED lighting question

[cactusjack]

I'm still trying to work the last remaining kink out of my trailer wiring. I added a 15" LED STT light assembly to the back of the cargo box. My intent was to utilize it as a tail/center stop light. In order to do this, since there is no separate stop light circuit in a 4-wire trailer system, I installed a Stoplogic third brake light module.

The concept is very simple: you connect the LT and RT inputs to the module and when it detects 12v on both inputs (when the brake circuit is actuated), it opens a gate and supplies 12 to the output side, which connects to the stop light.

It works great when the trailer is connected to my truck. However, when the trailer is connected to my Nomad, the Stoplogic module does not prevent the turn signals from actuating the center stop light, so in a left turn situation the left turn signal and the center stop light flash, vice-versa in a right turn situation. The center brake light does work properly, though.

My best guess is that it has something to do with the lack of incandescent lights on the trailer. They are all LEDs, except for the little interior courtesy light and the license plate light. The resistance through the LEDs is probably not enough to properly trigger the gates inside the Stoplogic module.

I should add that when connected to the Nomad, there is a Hoppy 46255 power taillight converter which isolates the trailer lighting from the motorcycle. The motorcycle brake, tail, LT and RT circuits are merely triggers to activate the relays in the Hoppy converter, so the trailer doesn't benefit from the resistance in the bike circuits.

Anybody have any thoughts on how to make this work? If I can't fix this, my only alternative is to either let the center light flash with the turn signal, or disconnect the stop light input and use the center light as a running/tail light only.