90Ninety

Replacing Head Unit Question Dual RF Connectors Fakra

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So I just removed my Stock Head Unit ( CD6000 ) from my Mk4.5 Mondy , to replace with a Android Touchscreen with FM radio .  The car has two RF facra leads  going to the old HU but the new HU has just one Antenna ( ISO ) input  . I read that some cars have dual antennas , or a single antenna with a booster  - So I just purchased a Dual Antenna Adapter ( attached )which supposedly  adapts the dual FACRA to one ISO Antenna Connection and one Voltage tap connector ( powers the booster )

 

Before I wire this and blow something , I just wanted to check if I am correct in my thinking ....

 

dual ant.jpg

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This adapter seemed to do nothing, If I connected with either, or both  Fakra connectors I get the same reception , when connecting the blue wire ( to Antenna amp/ Blue wire ) this made no difference 

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So I have the adapter in place but , to be honest the FM signal is worse than it was from the old unit .  Maybe the adapter is incorrect ? 

 

Can anyone advise?

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