Power Antenna Wiring Help

[blarchitect]

I'm repacing the broken factory standard power antenna for a non factory one and need some help with identifying the wiring.

The existing Toyota wiring plug is a :-
Blue wire with red stripe and a,
Black wire with red stripe.

The new wiring has a :-
Black-Earth
Red wire-12v battery feed
Green wire-It says directly to on/off switch of radio

Can anyone suggest which wire connects to which???

Hope you can help

 

[tarheeltp17]

Well toyota only has 2 wires ran because all it does it reverse the polarity to roll up/roll down... but in your case the antenna you bought may have some sort of ability to roll itself down when it senses that there is not 12V being sent to it from the radio switch. So my suggestion is if you have a volt meter, multimeter, whatever...to test voltage. Turn your radio on and test each wire to see which one has 12V when you turn the car ON. You can use that wire as the one that goes to green. The other 2 must go to exactly what they say...12 volt constant and the other to ground.

 

[blarchitect]

Ok it give it a try. So there will be one Toyota wire not completing a circuit?
Thanks

 

[tarheeltp17]

Whats happening with those 2 wires is that when you turn the car on, one wire will show 12V while the other will show ground. Then when you turn the car off, the wire that showed ground will show 12 V and the wire that showed 12V will show ground. Reversing the polarity of the wires changes the direction that the motor. So you want the one that shows 12V when the radio is on, because when you turn the radio off and it doesn't see 12V, the antenna knows to wind itself down.

 

[blarchitect]

Got it thanks! Great explanation.
Cheers