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What is the wiring schematic for the origional power antenna?

Tiny
ROSSIMA182
  • MEMBER
  • 1989 CADILLAC FLEETWOOD BROUGHAM
  • 81,000 MILES
Hello,
I have a 1989 Cadillac Fleetwood Brougham d'elegance, and I am trying to replace the power antenna. When I bought the car, there was an after maket one already in, but not wired in, and I am wondering, what are the three wires that are under the hood of the car? (As in, which one is the ground, which one puts it up, and which one puts it down?). The three colors are grey, green, and white, so thats why I cant guess which is the ground wire. If anyone can help, I would greatly appreciate it.

Thank you
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Monday, March 19th, 2012 AT 6:50 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
See below

OPERATION
With ignition switch in "ACCESSORY" or "RUN" position and radio turned on, voltage is applied to antenna relay coil. The relay contacts close and battery voltage is supplied through Dark Green wire to antenna motor, driving antenna mast up. The other motor terminal is grounded through the internal antenna motor up switch (Gray wire and relay contacts). At the end of upward mast travel, up switch opens and motor stops.
When radio or ignition is turned off, the circuit through antenna relay coil is opened and contacts move to a position which applies battery voltage to White wire. The Dark Green wire is now grounded, reversing the motors polarity. The motor now runs in reverse and drives antenna mast down.
Once antenna mast is fully down, internal antenna motor down switch opens and breaks current flow. Both sets of switches are now open.
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Monday, March 19th, 2012 AT 7:04 PM
Tiny
ROSSIMA182
  • MEMBER
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Thank you Rasmataz,
So pretty much to sum that up, green is up, grey is ground, and white is down?

Thanks again.
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Monday, March 19th, 2012 AT 8:22 PM

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