cjack posted:Interesting tester. The 3 wires come from the radio board and track power? And the regulator attaches to the green terminals...?
Yep, the red, black, black/brown, and brown wires connect to the four pin header, it's labeled on the front. The two pins are ground and smoke output so I can connect a test resistor in addition to my indicator light. This is just a little section of my TMCC test board. I keep adding stuff as I run across new stuff I want to test. The other green terminals next to the speaker come from the R2LC smoke output for testing that under load.
PTA posted:Got it. My brown/black wire does not go to my smoke unit.
I have three wires going into the smoke unit, two are black, one is red. The red wire is coming from somewhere on the main motherboard. One black wire is coming from the smoke on and off switch and the other black wire is coming from a pin on the main board. All fairly thin gauge wire.
That smoke unit only has three external connections. What's connected to the other side of the smoke on/off switch? That would have to be the black/brown wire if the regulator is going to supply power to the smoke unit.
