antenna thread questions

[Tom Nas]

hah at srv.net wrote:

>There should be one wire that, when powered, will raise/hold the antenna in
>raised position. On my 200q with antenna amplifiers, the white wire from
>the radio turns on the amplifiers (antenna as well as speaker, though the
>fire-hazard Bose speaker amps are no longer present). But your wires may
>vary.

So that's what it is! There's a greyish-white wire in both my cars (with 
rear defroster antennas) that isn't connected to anything. Both cars have 
rather mediocre radio reception. Coudn't find it anywhere in the electrical 
diagrams, most cars here have a conventional antenna.

So, to which wire on the head unit do I connect this 'spare' whitish wire?
Obviously not to red, permanent + (the best way to drain your battery...), 
would the blue (electric antenna/remote amp) wire be OK?

Thanks, Tom