Mods for TC Electronic Vibraclone

[Big Monk]

The past few days I've gone down a rotary rabbit hole. Long story short: Some of the best out there are physically big and power hungry. I have my 2 300 mA taps (I have 2 10 tap Otraki power bricks) occupied by the Strymon El Cap and Flint.

I did not want to have to run another separate AC adapter (I already have one dedicated to my EHX Good Vibes) so I decided to take a chance on the TC Vibraclone. It's a pedalboard friendly size and only requires a 100 mA tap, of which I have more than a few left.

It is not talked about as much as some of the more expensive Rotary sims but it was a good price and I see the potential for 2 mods:

1.) Add a jack for use with an external switch for going between fast/slow settings. Dedicated switch on the pedal would still work with no external switch in use.

2.) Add a jack for expression pedal control of the speed.

The simpler expression mod would be easy. What I'd like to do is set it up to have an LED that tracks the Speed rate.

Can someone point me in the right direction? I have R.G.'s article about adding expression control but need additional info on the LED that tracks speed.

[Big Monk]

With respect to #2 above, I'd like an arrangement similar to what my Electro Harmonix Good Vibes has:

1.) Whether the expression pedal is hooked up to the good vibes or not, it has an LED that tracks the speed setting;

2.) When the expression pedal is hooked up, the speed setting on the unit sets the range of the expression pedal.