I finally got around to yanking the stock headunit in my 89' 740turbo, as well as stock amp and have wired the new headunit into the stock speakers. However, I cannot find the auto antenna retract wire to hook up. Does anyone know what color it is? I could not find it in any wiring diagrams. The switch no longer will cause the antenna to raise, it remains retracted, and I get no radio stations on my new headunit. Can anyone tell me which wire it is so that I may hook up my headunit into the antenna retraction switch and hopefully recieve radio stations once more?

According to the green bible, for '89 740's the power antenna control is a green-red wire on pin 12 of the radio connector. Pin 12 is the corner pin opposite the orange wire on pin 11; the other green-red wire on pin 9 next to the orange wire is battery +12 volts from fuse #5. That's for UK/USA/CDN vehicles with the separate amp, otherwise the antenna control wire is a green-grey wire from pin 3 of the 3x3 radio connector. The green-red wire changes to a green-grey wire at the left A-post connector (or the dash antenna switch if you have it) before carrying on to the antenna motor connector. The green-red wire at the antenna motor is battery +12 volts from fuse #5.

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Dave -not to be confused with a real expert, just goofing around at this

if i remember correctly it is green, dont hold me to this 100% but if i am remembering from the times i hooked my radios up it was a green one, in fact the first time i hooked one up i just hooked the antenna to the aux wire so when i turned the car on the antenna came up, the second time i did it right , turn the radio on the antenna goes up off it goes down.