Blocking DC on a dual function motor Relay control/stock Hammond CU1 Switch

[jukelemon]

Hi all.

Hoping this fits into the sub forum give its relay and SS oriented.

I am trying to build a control box/splitter that will control both my Leslie motor control that I built but also retain the internal Leslie control on my Hammond organ.

For those not familiar...the Hammond Leslie switch is basically a Tele switch wired so that in the middle position both motors don't spin.  Then there's a slow and fast depending upon connecting either of the TRS tips.  Fairly simple.

I designed my motor controls to use this exact same wiring because I wanted to be able to either use or not use the Leslie I built.

So...my motor controls are operated on a ~5vdc power supply that is wired so that the 5vdc rides on what would be normally the ground on the TRS and then the Hammond Leslie switch either sends the 5vdc to the tip (1) or the ring (2) thus activating the relay thus turning on the slow/fast relays.  It works very well and no issues with that part.

BUT what I want to do is also be able to use the switch to ALSO control the internal Leslie as if not using an external Leslie OR using both.  To do this, I need to block all DC to that circuit branch (Output 2) so the organ is safe.

In my mind, it is as simple as just using 3 capacitors for terminals 1-3 between the switch plug in (Input) on the splitter box and Output 2's 1-3 terminals.  That way, output 2 would literally just be as if there were three wires going to my organ.

Do I have this right or am I missing something?  Better suggestions?

Thanks all.