I'm sure this is probably bone simple to you guys, but to me, being electrically naive...I need help..
What I have is an automatic radio aerial (aftermarket Harada), it is currently wired to the radio. When you turn on the radio the aerial fully extends. It is wired like this:
Black wire to ground - Red wire to hot terminal when ignition is on - Green wire to radio which is positive when the radio is turned on.
What I want to do is install some type of toggle switch (momentary or?) that will allow me to disconnect the aerial from the radio and make the aerial operate from the toggle switch. The purpose of all this is to allow me to choose the height that the aerial extends by making momentary contact with the toggle and stop the aerial at whatever height I choose and also to retract the aerial. Can this be done and how would I wire whatever type switch is required?
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Ronlu
Totally depends on the circuit design of the antenna, it may be that the motor only needs a momentary pulse to send the antenna all the way up , tripping a limit switch to disengage the motor, when the motor senses no voltage on the input (green wire) is sends the antenna all the way down, again tripping a limit switch to disengage the motor, if this is the case you are stuck with either all the way up or down. You can test this by putting in a simple on - off toggle switch on that green wire.
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Top Secret, I can tell you but then my wife will kill me.