I am helping a local church setup an AV system. The plan was to simply use the 12v trigger to control the screen making operation as simple as possible. The only problem being that the projector does not have a 12v trigger output. First off, I thought this was a standard and common feature and I was surprised to find that it was not included. Second, what would you suggest as a workaround? The only wire run between the screen and projector is a 2 conductor 20awg.