How to install switch for winch?

[Norcal crawler]

I have got a winch all wired up and it wont stop moving. I know about the pot thing, and it will stop moving, but next time i turn the truck on, it moves again. So i want to install a on/off switch to the winch. I dont really know which wires to solder to the switch and where they go. If anyone can tell me or has any pics to show how to solder the switch to cut the power to the servo that would be awesome. I'm using a tq3 btw. Thanks for any help!

 

[JohnRobHolmes]

Just cut the midde (normally red) wire, and install an on/off between the two ends.

 

[Norcal crawler]

Ok cool. Thanks a lot!