'87 flhtc radio problems
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Cruiser
Joined: Nov 2008
Posts: 204
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From: Glenwood, MN
'87 flhtc radio problems
I searched the site and can't find info on the older radios. My radio power button lights up and nothing else. The company that built it for Harley is Radio Sound and they service '88 and newer "there was too many custom parts in these units and we no longer service them." The unit looks kind of like a shaft style once you take the face plate off, I would have to butcher the fairing inner to fit a newer one. The '88 and up fairing inner losses two of the gauges (oil temp and clock) and I am told by Biketronics that the wiring is quite different. HELP!!!!!!
Road Master
Joined: Nov 2007
Posts: 1,223
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From: Peoria, AZ
Rad-io
Dunno if these are applicable for your model year and radio but: RADIO DIAGNOSTICS
To enter the radio diagnostic mode, press any two (2) station preset buttons simultaneously while turning ignition on. There are five (5) diagnostic modes (D1-D5) plus Automatic Volume Control (AVC) setting. Digits will change from 0 to 1 when function button is operated. If digit does not change, there is either a short or open on that circuit (see Service Manual or ED for codes). To cycle through the various diagnostics, use the LO/DX button.
D1: Switch Function Mode will display a five (5) digit binary code at the top of the LCD.
Digit 1=Mode set, up & down
Digit 2=FPTT, RPTT, Volume up & down
Digit 3=Audio in, Squelch-, Eject
Digit 4=Audio-, Squelch+
Digit5=Audio+
D2: LCD displays an 8-digit code
Digit 1=PTT microphone Digit 2=Vehicle speed Digit 3=VOX break Digit 4=CB SQ break Digit 5=IC on/off Digit 6=CB on/off Digit 7=SPKR SW B Digit 8=SPKR SW A
D3: LCD function=Illuminates all display items in radio LCD.
D4: Model year=Select model year as prompted.
D5: Software=Displays software information
AVC: Automatic Volume Control=Adjusts volume to engine speed. 0 to 4 range with 2 the factory setting and 4 being the most aggressive setting.
If this is not applicable and if everything is working (power to radio/tape plays), I would look for the main speaker wire having an open from the radio back.
To enter the radio diagnostic mode, press any two (2) station preset buttons simultaneously while turning ignition on. There are five (5) diagnostic modes (D1-D5) plus Automatic Volume Control (AVC) setting. Digits will change from 0 to 1 when function button is operated. If digit does not change, there is either a short or open on that circuit (see Service Manual or ED for codes). To cycle through the various diagnostics, use the LO/DX button.
D1: Switch Function Mode will display a five (5) digit binary code at the top of the LCD.
Digit 1=Mode set, up & down
Digit 2=FPTT, RPTT, Volume up & down
Digit 3=Audio in, Squelch-, Eject
Digit 4=Audio-, Squelch+
Digit5=Audio+
D2: LCD displays an 8-digit code
Digit 1=PTT microphone Digit 2=Vehicle speed Digit 3=VOX break Digit 4=CB SQ break Digit 5=IC on/off Digit 6=CB on/off Digit 7=SPKR SW B Digit 8=SPKR SW A
D3: LCD function=Illuminates all display items in radio LCD.
D4: Model year=Select model year as prompted.
D5: Software=Displays software information
AVC: Automatic Volume Control=Adjusts volume to engine speed. 0 to 4 range with 2 the factory setting and 4 being the most aggressive setting.
If this is not applicable and if everything is working (power to radio/tape plays), I would look for the main speaker wire having an open from the radio back.
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