Megatouch Maxx, ELO Touchscreen, How do you Wire the Power?

jalpert

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Megatouch Maxx, ELO Touchscreen, How do you Wire the Power?

I have a Megatouch Maxx with an ELO touchscreen. The power connector has 9 pins and the wire harness has 3 wires attached.

Since this unit requires 5V power, I'm assuming the two wires that are twisted together which are red and black are 5V and ground. However, there is a 3rd wire and I'm not sure what to make of it. I thought I was missing some wires on the harness until I saw another post about the same controller, and his wiring harness looked the same. It also has a sticker on it like it's from Meritt.

Anyway, I believe the green wire is -5V, based on this diagram, the connector is P4:
http://www.elotouch.com/Support/TechnicalSupport/Controllers/2310.asp

Attached are some pics of the controller and cable.

Was I right about the black and red cables? Where does the green wire go?
 

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