Trailer hitch wiring yaris 2012

[Strider199]

Thanks for the suggestions Guys.
I do have a similar wiring converter installed CTScott, it's not a Hopkins but has the same extra brake wire lead which is needed because of the separate signal bulb.
I was really hoping it wasn't because I needed a separate power supply due to draw WeeYari but it does sound like something is shutting down due to a lack of power.
Next chance I get I'll run the converter to the larger main bulb wires instead of those hair like wires from the main plug and hope that solves it.
Any other suggestions are welcome, please.