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power antenna - how to tell which is constant 12 wire and which is trigger? 700 1992

posted by  robbmcc on  Thu Jul 30 06:21 CST 2009
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last visit: Thu Oct 23 08:41 CST 2014
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Hey all
With an older antenna in hand for a late 80's 740 wagon (round bullet style connector) how do I tell which of the red wires goes to constant 12 at fuse 5 and which goes to the antenna switch and then onto the radio? I need to re-connector this for my 92 which has the flat spade connectors but I need to figure which red wire is which on the antenna side.
Thanks,
Robb








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power antenna - how to tell which is constant 12 wire and which is trigger? 700 1992

posted by  ojdorson on  Fri Jul 31 03:17 CST 2009
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last visit: Mon Sep 8 12:49 CST 2014
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Right, this is how mine works...

As long as both leads have constant 12v, the antenna stays up. If the antenna sees a constant wire with 12v and the trigger wire with nothing, the antenna retracts. If the antenna is already up and then the antenna sees 12v on the trigger and nothing on the constant, the antenna stays up.

So, hook them both up to 12v, let the antenna go up fully. Take one wire off - if the antenna goes down, you've pulled the trigger wire; if the antenna stays up, you've pulled the 12v wire.








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power antenna - how to tell which is constant 12 wire and which is trigger? 700 1992

posted by  bluedot on  Thu Jul 30 10:19 CST 2009
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last visit: Mon Nov 15 07:05 CST 2010
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Test-fit the wiring together.If it works properly,finish the wiring.Nothing will be damaged if hooked up reversed.

Bill







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