# 1222 VCO molex wiring **URL:** \ **Category:** KOSMO MODULES\ **Created:** [May 13, 2020, 9:39am UTC](https://lookmumnocomputer.discourse.group/t/1222-vco-molex-wiring/873 "2020-05-13T09:39:01Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![fluxpavilion](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fluxpavilion/32/2475_2.png) [@fluxpavilion](https://lookmumnocomputer.discourse.group/u/fluxpavilion)\ **Post date:** [May 13, 2020, 9:39am UTC](https://lookmumnocomputer.discourse.group/t/1222-vco-molex-wiring/873/1 "2020-05-13T09:39:01Z")
never wired up a big rotary like this ive done a little crimping so should be good to put it together but what goes where!? see some numbers that look backwards lloks like 1v 2v 3v 4v but one of them is empty and im not sure where the ground would go, peg A in the middle of the rotary? ---
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [May 13, 2020, 10:05am UTC](https://lookmumnocomputer.discourse.group/t/1222-vco-molex-wiring/873/2 "2020-05-13T10:05:08Z")
other guys have the same problem, i think you can find your solution in this topic 😉 > [@1222 Tuner VCO Module](https://lookmumnocomputer.discourse.group/t/1222-tuner-vco-module/16): > > That CEM3340 beast from the east. a mouser cart maybe? hows the tuning and calibration going!@!?! edit : but i think 6 go to center pin, “normal signal” with no octave down in pin 1 (GND) 1 oct down = pin 2 (1V) 2 octave down = pin 3 (2V) 3 octave down = pin 4 (3V) 4 octave down = pin 5 (4V ref) on the rotary : A center, and after pin 1,2,3,4,5 ![schematic2..232](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/d/d8a9fcef243b1d103c7683ddb93b764ec8f40872.jpeg) but i haven’t buit this, maybe wait for confirmation of other guys … edit : see at 12.48’ [![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/a/e/ae2ea782b7a6337e42c541a23b67642b87019ae2.jpeg "2/3 Building the Kosmo 1222 Tuner VCO") ](https://www.youtube.com/watch?v=bYNUtB59eFc) ---
**Author:** ![fluxpavilion](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fluxpavilion/32/2475_2.png) [@fluxpavilion](https://lookmumnocomputer.discourse.group/u/fluxpavilion)\ **Post date:** [May 13, 2020, 11:39am UTC](https://lookmumnocomputer.discourse.group/t/1222-vco-molex-wiring/873/3 "2020-05-13T11:39:21Z")
Ah awesome! Is there a build vid for every module? Its super helpful ---
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [May 13, 2020, 11:55am UTC](https://lookmumnocomputer.discourse.group/t/1222-vco-molex-wiring/873/4 "2020-05-13T11:55:35Z")
no not for all but some all the projets : > **[STUFF - LOOK MUM NO COMPUTER](https://www.lookmumnocomputer.com/projects)** > > Click on the images for more info on the projects, this is a work in progress and will build on the pages as i go. ---
**Author:** ![Sussmayr](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/sussmayr/32/22691_2.png) [@Sussmayr](https://lookmumnocomputer.discourse.group/u/Sussmayr)\ **Post date:** [October 3, 2022, 3:46pm UTC](https://lookmumnocomputer.discourse.group/t/1222-vco-molex-wiring/873/5 "2022-10-03T15:46:01Z")
This information is exactly correct, thanks Dud! Pin 1-5 correspond to terminal 1-5 on the switch Pin 6 connects to A in the center of the switch