that's good to know gene ! the slider door contacts on my caravan occasionally need a scrubbing with a fine steel wool pad to work. i thought about using some of those, but they are only a two wire setup. i will need more than that, so a flex cable bundle will more than likely be used. another reason for the flex cable is the fact when trouble shooting or even just operating the window mechanism, when the door is open, you would need to rig up something to power up the systems as the contacts are broken, therefore, no power.