@Turbo4whl in my early days as a contractor in chemical plants and refineries I was running conduit and pulling wire for a living. When someone did ugly work, when the craftsmanship was sub par, they were often told something like "That looks like hammered goat s**t. Are you gonna leave it like that?" Only those that did "pretty work" were allowed to terminate in panels and starter buckets. I still sort of work in the Instrumentation and Electrical field in a refinery although I think my construction days are long gone. But I don't like Ugly Wiring and I don't like an ugly installation in an otherwise good looking truck.
@SirRobyn0 you mentioned that it doesn't have to be a "high current" switch. How much current, how many amps does it have to carry? I have no clue what it takes to lock up a torque converter. I am assuming some sort of solenoid, I would want to know exactly how many amps it takes and make my switch choice based on that first and go from there.
Edit: CAN you use a momentary push button? I am thinking not, the switch you currently (no pun intended) are using is either open or closed. A momentary switch may not work for this application.
And since I really respect you and your posts I have hesitated to point this out up to now... That ashtray power station thing you have going there looks like a total ClusterF*** to me. I LOVE your truck, I love that you USE the truck and I understand that form follows function but those wires going everywhere like a wisteria vine... none of that looks safe or organized to me. Every time I see that I want to attack it with some wire loom and small zip ties!