Radio Wiring Help!!
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Road Master
Joined: Aug 2007
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Radio Wiring Help!!
OK, I need help from somebody who has an older FLHTCU. Mine is a 1990.
My factory radio is all plugged in nice and works fine. HOWEVER... I have 1 wire left coming out of the radio that is not in any of the schematics I have in the service manual. It is a blue wire with a white trace and has one of those typical Harley single pin bullet male connectors on it. When I put my meter probe on it and the other probe to ground it measures 4 volts. The only wire I have left under my fairing is a blue with a yellow trace wire. It has the same bullet connector on it but female. The connector coming off of the radio is white, the connector coming off of the wiring harness is black.
Does anybody know what this wire is for???? Neither of these wires are in my service manual schematics. It doesn't seem to do anything whether its plugged in or not.
My factory radio is all plugged in nice and works fine. HOWEVER... I have 1 wire left coming out of the radio that is not in any of the schematics I have in the service manual. It is a blue wire with a white trace and has one of those typical Harley single pin bullet male connectors on it. When I put my meter probe on it and the other probe to ground it measures 4 volts. The only wire I have left under my fairing is a blue with a yellow trace wire. It has the same bullet connector on it but female. The connector coming off of the radio is white, the connector coming off of the wiring harness is black.
Does anybody know what this wire is for???? Neither of these wires are in my service manual schematics. It doesn't seem to do anything whether its plugged in or not.
Extreme HDF Member
Joined: Apr 2006
Posts: 10,449
Likes: 46
From: Roswell, GA
Pictures of what you are describing would be a big help given the large number of connectors related to the audio system.
As for the blue/white wire, is it from the Base Audio Connector or the Ultra connector on the back of the radio. Which numbered chamber is the wire in?
As for the blue/yellow wire, what connector is near it? Don't have a 1990 wiring diagram, but HD doesn't change wire colors often, and on later models the blue/yellow wire comes out of pin-out 2 of the BAC and is found at the audio connector and rider headset connector.
Give Radio Sound a call; (502) 267-6768, and ask for customer service. It's their head unit in your bike.
Carl
As for the blue/white wire, is it from the Base Audio Connector or the Ultra connector on the back of the radio. Which numbered chamber is the wire in?
As for the blue/yellow wire, what connector is near it? Don't have a 1990 wiring diagram, but HD doesn't change wire colors often, and on later models the blue/yellow wire comes out of pin-out 2 of the BAC and is found at the audio connector and rider headset connector.
Give Radio Sound a call; (502) 267-6768, and ask for customer service. It's their head unit in your bike.
Carl
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Road Master
Joined: Aug 2007
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I found out what it is. Its not listed in any of my schematics in my service modules.
The blue white with the white trace that comes out of the radio connects to the blue wire with the yellow trace that comes out of my wiring harness and it is the power on/off feed for the CB.
The blue white with the white trace that comes out of the radio connects to the blue wire with the yellow trace that comes out of my wiring harness and it is the power on/off feed for the CB.
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