stereo issue


Information and questions on GL1100 Goldwings (1980-1983)
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Chewy
Posts: 249
Joined: Thu Apr 18, 2019 11:07 pm
Location: Readyville, TN United States
Motorcycle: 1980 1100i Interstate
1983 1100a Aspencade

stereo issue

Post by Chewy »



was messing around with the amplifier on my 83 aspy today. when it is mounted in the fairing, i only get audio out of the right speaker. if i take it out and plug it in from the left fairing pocket, i get audio from both speakers. i have moved the wires around, but cannot replicate only having sound from the right side. have any of yall had this issue? if you were able to fix it, what was the solution?


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Sig45227
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Joined: Sat Jun 26, 2021 4:12 pm
Location: Richfield, Wiscsonsin
Motorcycle: 1983 GL1100 Aspencade
2007 Yamaha FZ1
1992 Yamaha FZR1000

Re: stereo issue

Post by Sig45227 »

I'll be watching this post. Wish I could help. I get no audio from either speaker. I'm not even sure which fuse the sound system runs though but it's on my list of things to fix after brakes, and a timing belt.
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Chewy
Posts: 249
Joined: Thu Apr 18, 2019 11:07 pm
Location: Readyville, TN United States
Motorcycle: 1980 1100i Interstate
1983 1100a Aspencade

Re: stereo issue

Post by Chewy »

Sig45227 wrote: Fri Aug 06, 2021 5:35 am I'll be watching this post. Wish I could help. I get no audio from either speaker. I'm not even sure which fuse the sound system runs though but it's on my list of things to fix after brakes, and a timing belt.
what i would love is a diagram that shows what the wires are used for in the din cable. if i knew which wires carried which audio signal, i would just wire in my own small amplifier.
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bruce swaybill
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Location: farmington, ct
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1983 honda gl1100i interstate
2009 triumph bonneville t100

Re: stereo issue

Post by bruce swaybill »

In the manuals section you will find the installation manual for the radio system... you may find your answer there ….
Have a nice day! :)
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Chewy
Posts: 249
Joined: Thu Apr 18, 2019 11:07 pm
Location: Readyville, TN United States
Motorcycle: 1980 1100i Interstate
1983 1100a Aspencade

Re: stereo issue

Post by Chewy »

Sig45227 wrote: Fri Aug 06, 2021 5:35 am I'll be watching this post. Wish I could help. I get no audio from either speaker. I'm not even sure which fuse the sound system runs though but it's on my list of things to fix after brakes, and a timing belt.
MAKE SURE ALL OF THE IN-LINE FUSES ARE GOOD.


remove both of the blinker housings in the fairing. unplug both speakers from the amplifier. turn on your radio and turn the volume all of the way up. check for voltage across the speaker wires coming from the amplifier with a digital multi-meter. it will be a low voltage signal, around 4.7 VDC. (1)if you have voltage there, your amplifier is good. (2) if not, you have a bad amplifier. again, be absolutely sure your fuses are good before doing what im doing.

i am going to replace the amplifier with an aftermarket one that is smaller. i want to keep the bike as close to stock as possible.

YOU DO NOT HAVE TO DO WHAT IM DOING. this is what worked for me. i cannot guarantee that it will work for you, but i dont see any reason why it would not. electrical is electrical, voltage is voltage, signal is signal.

if you have a bad amplifier.

pull your amplifier out of the fairing. remove the left and right blinker housings from the fairing. when you look inside the right blinker hole of the fairing, it is the metal box closest to the headlight. there should be 2 acorn nuts on the inside of the fairing, near the center of it, by the steering stem. remove these 2 acorn nuts. unplug the amplifier from the wiring harness. it is a rats nest of wiring in there. look for a 2 wire plug with wires that are green and yellow, there may be multiples. easiest way may be to pull on the wires from the right side a bit, and see which ones move the most in the left side. there will be an inline fuse taped up with the wires going to the amplifier. trace the DIN wire to the main box at the bottom of the fairing in the left blinker hole, unplug this wire. you may need to remove the cassette player and housing to get better access. work the wires through to the right side of the fairing. it does take a bit of wiggling and angling the amplifier to get it out of the hole.
it helps out if you have smaller hands. i have big meat hooks, so it was more of a pita than it would be for someone who has smaller hands.

the next step in the process.

the 5-pin din plug contacts are as follows:
#1.-----unused
#2.-----ground wire for the audio.
#3 -----left channel for the audio.
#4.-----mute function.
#5.-----right channel for the audio.


the 3.5mm headphone male plug, a.k.a.TRS contacts are as follows:

tip.----------left channel audio
ring----------right channel audio
sleeve-------ground

PAY ATTENTION. you will lose the mute function doing this mod. i am going to see if i can figure out how to wire in a relay that will allow the use of the mute switch on the left handlebar.

solder the wires from the 5-pin DIN to the 3.5mm male headphone jack. make sure that each channel is connected properly, i.e. left to left, right to right, ground to ground. i have use this cable already to play the audio from my 83 aspy, through the aux port in my stereo in my f-150. i have proof that it works.

this is the amplifier i am going to use.

https://www.amazon.com/dp/B07SHRM5H8/?tag=goldwingdocs-20 ... NrPXRydWU=

i hope this helps anyone having this particular issue.
i may also build a few units that will be plug and play if anyone wants to buy them.
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