When I bought my new but used LX200 it already had the Meade #1206 Electric Focuser.
I was quite happy with it, but found it very annoying that the Electric Focuser did not allow me to use the (much coarser but faster) manual focusing, so it took a lot of time to focus when I changed from diagonal to visual back to 2xBarlow to 5xPowermate etc.
However when reading the Meade Operating Instruction of the #1206 focuser I found out that the nut on top of the focuser was called the "motor drive clutch nut" so I loosened the nut just enough that the motor would still engage but that it would also permit me to use the manual focus knob.
I was happy to see this work perfectly well!
Here you can see what I mean:

Adjusting the clutch.

A note for myself (because I always forget): when increasing the focal length (e.g. by mounting a Barlow) the manual focus knob must be rotated clockwise to achieve focus.
And when decreasing the focal length (e.g. by mounting a focal reducer) the manual focus knob must be rotated counter clockwise to achieve focus.

Another thing I found even more annoying is the way to operate the electric focuser via the LX200 Keypad Hand Controller.

    My main grievances are:
  1. I need TWO hands to focus: one for the Focus Button and one to focus in/out via the Prev/Next Buttons
  2. The focuser motor runs on a short while after I have released the keypad buttons, so I tend to overshoot the sweet point
  3. When I change the focusing speed I usually forget to change it back after focusing and then using the NSEW buttons always startle me: the object has disappeared !
    Especially for me as a webcam imager this is dramatic because refinding the object is no easy matter
  4. And after a GoTo I am shocked to experience that the Focus Button does not work, unless I hit the Mode button first. I always seem to forget this.
  5. I welcome visitors in my observatory and as they came to enjoy the views through my telescope they need to focus.
    By themselves of course. If you ever tried to explain to a non-astro person how to use the LX200 Keypad Hand Controller, you know how hard that is.
So I started to think how to solve the above 5 issues, and I found the following solution: (Matthias: thanks for your guidance with the electronics).
I was inspired by a website "Bob's LX200 Web Page" which alas is no longer available.

For non-electronics guys (like me !!) here is what I did:

  1. I connected a 12V car battery with a 12V 6 Watt bulb: it should give light :o)
    Oh: make sure you do not use a high(er) Wattage as this might ruin your variable resistor
  2. Next I inserted the variable resistor in the + line and turned the axle: in my case I saw to it that it went brighter when I turned clockwise.
    If it does the opposite swap the wires of the variable resistor
  3. I introduced the momentary switch into the circuit and tested if it still worked
  4. Replaced the bulb with the motor and tested
  5. Installed the components in a small project box

Here is my own home made Focuser Handpad which is operated by ONE hand, has its own speed control and for simplicity I gave it its own 12Volt DC power [also because I wanted to leave the LX200 Power Panel alone].
The momentary focusing switch is spring operated and is called a ON-OFF-ON Double Pole, Double Throw [DPDT] Centre off switch (click and browse down to the 'ON-OFF-ON DPDT Centre Off' switch and note the connection diagram for motor control: forward, off and reverse).
The variable speed is controlled via a simple variable 100 Ohm resistor.
The 12Volt DC comes from a 12Volt DC Power Supply I already have in my observatory, but can also be supplied by a car battery.
When operating at low speed the momentary switch makes it easy to focus precisely, without the focuser motor running on after I have released the switch.
And because of the simplicity of my Focuser Handpad my visitors have no problem focusing by themselves.
When my non-astro oriented brother visited me he intuitively understood how he could focus with my home made Focuser Handpad.