Uncoupling track

Though I've faced the same dilemma, the problem is that some accessories work with a throttle. So how is the system to know that the knob should control the engine, and not the accessory?

It's bugged me enough to consider a mini-control panel with pushbutton switches for the uncouplers.

You could hook up the uncouplers as switches to make them work the same way.  You may have to get creative with an added timer circuit so that the uncoupler only fires for a second or two with each press of a remote button.  I can't recall off the top of my head if the ASC only fires a moment on a throw command, of if it keeps powered for switches.

JGL

I am using SC2 for my ACC

Just took a moment to look over the instruction manual for the SC2 to see if I'm giving you correct information, and I am 99% sure that I am... though from time to time my brain goes out for a sandwich without telling me.  Anyway...

you would simply assign one uncoupling track to the through connection and a second one to the throw/curve connection and program them in your remote as a switch.  the coupler will fire as long as you hold down the aux1/2 button and otherwise allow you to use the throttle as you can when controlling other switches.

You would call them up by pressing switch instead of accessory.  

Edit:  

Worth noting that an SC2 can be set up to run 12 Accessories, OR 6 switches, OR 4 switches and 4 accessories, so if you already have more than four normal accessories connected in addition to your uncouplers, this method won't work with just one SC2

JGL

I'll have to do some rewiring & I can do it.  I have 3 SC@ with switches & 1 for ACC that I only have 2 ACC on & the 2 uncoupling tracks.

Thank You Ken M