electric aerial crisis!!!

[telski789]

hi,im wiring my head unit in today and for som reason i cant get the aerial to work,all there are is 2 wires coming from it,ones red and ones white,any ideas?? ive tried a few different ways but to no avail!! help!!

[stevo]

hi mate, is the white and red wires coming from the ariel? there should be a third one, usually black, for ground

[ATWScotland]

If the Red & White are the cables from the Aerial you are missing a control relay that has to be attached to 12V plus earth and also attached to the Head unit and sometimes ignition. The head unit will have a cable that is usually blue that tells the relay the unit is on. The relay then powers the aerial up. Hope this helps.

[telski789]

when i took the aerial out of my old shell the red and white wire went directly to the head unit,no relay,and the aerial is directly earthed to the car body,im stumped!

[Martinaston]

Red is live feed, attach it to the feed for the head.
and the white you connect to the aerial trip from the head. (usually blue)
The earth should be below the aerial motor to the bolt on the wheel arch.

[telski789]

thats what ive been trying! perhaps the earth isnt good enough,i'll check!! thanks!

[stevo]

try connecting the arial directly to the battery to see if its still working

[telski789]

how do i do that? i need to power the signal wire too? the blue wire in the back of my head unit pumps out 12v when the radio is on,do's a signal wire normally push 12v out? that wuld mean if i connect the red to the power and the white to the blue signal wire boh wires would have 12v? sound right?

[TOURINGDADDY]

put both on the 12v feed from batt and the earth on the neg terminal

[stevo]

make sure its not pointing up your nose ect when you do it