GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: philstar on 05 December 2015, 17:30
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Does anybody know what the thin black wire that runs alongside the aerial is for?
(http://naturalmohican.com/permanent/forum/mk2-golf-aerial.jpg)
Is it simply an earth?
It's on a 16V 1988 by the way.
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It's the +12 volt supply to the amplifier mounted in the base of the roof aerial.
Connect it to the (probably blue) amplifier switch-on lead if your radio has one, or just to a circuit which is live when the ignition is on, such as cigarette lighter.
You should find the radio reception is a lot better with it connected. If not, perhaps the aerial amplifier doesn't work!
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As above, it's the 12v feed to the amp. If the reception doesn't change with the lead properly connected then the amp could've died, not uncommon.
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Magic cheers guys!