I've had an MTH cantilever signal bridge for a long time and it's always been a pain to hook up. Most recently I just hooked it up to a couple of on/off switches so I could control it manually. That worked OK, but I'd like to activate them with the actual train using an insulated section. I don't want to spend the money on a Lionel or MTH infrared sensor and from what I've been reading, I can do the same thing with an $8 relay of some sort from Radio Shack.
There are two sets of wires (one for each signal head). Each has a black a green and a red wire. The black is ground, the Green is for the yellow and green lights and the red is for the red signal. What I need to be able to do, is shut the green light off and turn the red light on, and then the opposite (yellow light's up for a few seconds when power is applied to the green wire before the green light lights up) to change back to green.
Do any of you electronic guru's know what I need and how to hook it up?
This is the signal I have
There are two sets of wires (one for each signal head). Each has a black a green and a red wire. The black is ground, the Green is for the yellow and green lights and the red is for the red signal. What I need to be able to do, is shut the green light off and turn the red light on, and then the opposite (yellow light's up for a few seconds when power is applied to the green wire before the green light lights up) to change back to green.
Do any of you electronic guru's know what I need and how to hook it up?
This is the signal I have
