antenna not working properly

[Cameron]

i have just recently installed a cheap sub and amp package into my vy ute. all is well except when my radio turns on the aerial doesnt go up, it used to b4 the install but not now,

i had my HU out, radio on then disconected the aerial plug into the back of the HU, this made my reception go really bad so that kinda works. I was wondering if there was another wire or fuse that goes to the HU from the aerial that turns it on? has anyone else had this problem!
Thanks

[SweetWagon]

Yes there is a wire. i have just explained this problem in another thread called:

VZ antenna with aftermarket H/U

Look here as it is easier than typing again.