Antenna auto up/down

ok, I am a little busy at the moment but will check back later and post a diagram if no one else has been able to help.

TTYL

I need one more piece of info.

Is the factory power antenna fully automatic, or manual (you need to use a switch for up/down)

The reason I ask is that it might not be that simple if it's a fully automatic. whats happens with a fully automatic antenna is that once the "trigger" wire loses power, it goes down,

So if we use any kind of timer or latching relay circuit, the antenna will go down eventually, either when it times out, or once the door is closed. Perhaps I can design a circuit that can also kill the main power to the antenna motor once it's up, then reactivate it for down.

But before I rack my brain on that one, if it is a manual power antenna, or if you purchase one (they are not expensive, I can use a latching relay circuit along with a reverse polarity and it should work.

I thought of an idea. If it is a fully auto antenna (which it should be) try this. How it works is when you unlock the car with the remote..the antenna will go up.  Lock car with remote...the antenna goes down. Let me know if this will work for you.

power_ant_w_doorlocks.jpg