I installed the Metra PW22 power antenna. Challenge I have is the old OEM unit had three wires (red, blue and blue / yellow) and the new unit has only blue and red.

I read this Antenna Replacement but I don't think that is the solution.

What do I need to do here? Thanks

 

On that link, which I used when I set mine up, it states that you need a +12V constant to the antenna and you can grab that from the hatch glass release power. It also says that you get a +12V signal for up from the blue wire in the car's plug. In other words, the new antenna always has batter power and its signal line needs +12V to tell t to go up and 0V to retract.

So to test the blue wire from your car, stick a voltmeter onto the car's ground and the positive test lead on the blue wire from the car. Turn the radio ON and that blue wire should show +12V. Turn the radio OFF you should see 0V on your meter. If so, then connect the blue wire from the car to the signal line on the new Metra.

To find the +12V constant for the motor, test the voltage to the hatch release mechanism in the back, and see which lead provides 12V even when the ignition key is off. And that circuit is already fused at our main panel so it should be safe to tap that 12V line to run the antenna motor.

 

To summarize: blue wire from car in above photo to blue wire on antenna. Red wire on antenna to 12V constant on release mechanism (and ground antenna, of course). Do I have this correct? Thanks.

 

Probably, but test!

The Metra pamphlet should tell you what colors for +12V Battery and which for up/down signal. And you need to test that blue wire from the car with a volt meter to see if it behaves as described.

 

Success! That worked! Thanks for the help.

 

I'm really glad you got it sorted out!