Adding an Aux input to the GL1500 radio

Step-by-step tutorials on how to maintain and fix your GL1500
  • Sponsored Links
User avatar
Site Admin
Posts: 19309
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Adding an Aux input to the GL1500 radio

Post by WingAdmin » Wed Feb 21, 2018 4:41 pm

I get the vast majority of my electronic parts from and - either will have decent, quality audio transformers. You want one with relatively low impedance, look for around 300-600 ohms, and good frequency response.

This one has excellent frequency response, up to 15 KHz, but it's a bit expensive at $20 apiece - but made in Canada, not China: ... -ND/454936

User avatar
Posts: 13
Joined: Sun Oct 28, 2012 6:37 pm
Location: Vevay, Indiana
Motorcycle: 1995 GOLD WING GL1500SE

Re: Adding an Aux input to the GL1500 radio

Post by dwgeo104 » Mon Mar 12, 2018 12:24 pm

I just finished my audio upgrade on my 95 SE. Bought an LVPIN 2.1 Mini Amp and mounted it in my trunk with Velcro. Get any one with the decibels you want. Get one with an MP3 Plug input - save yourself some heartache. Took my out Radio to tie into output 1, 2, 3 & 4 pins and ran RCA Plugs to Amp. Be sure to use a filter on your power line - I tied to 12v Accessories Power @ my fuse box. Finally, be sure to spend a few dollars more and use an RCA Plugged Ground Loop Filter. I used a bit more Velcro and put an MP3 Player up front - got about 5,000 tunes at my finger tips and of course AM/FM Radio if I get bored with that. Sounds great, has no pops or buzz - and has power to spare. Total cost (not including new Speakers or MP3 Player) was around $25.

User avatar
Posts: 56
Joined: Fri Oct 03, 2014 3:21 am
Location: Christchurch, New Zealand
Motorcycle: 1983 Honda GL1100I
1987 Honda GL1200I
1997 Honda GL1500A
1982 Honda CX500 Sold
1981Honda CX500 Sold
1985 Honda GL650 Sold
1982 Honda GL400 Sold
1990 Yamaha 400 Sold

Re: Adding an Aux input to the GL1500 radio

Post by Alemayehu » Sat May 05, 2018 12:54 am

Hello friends I have done every thing as every one of describe how to add an aux input to my 1997 gl1500 Asp.I solder the right speaker cable to C140 and left speaker wire to C139 and the ground attached it to one of the screws securely no mess at all it is clean job and it works but I can't full the tape with dummy cassette instead I need to put normal cassette what it does, it over ride the voice that comes out of the cassette and start to play from my iPhone. of course there is some voice but totally can't notice it that much, when I unplug the aux cable the tape plays with its normal level of sound.What can I do? Please help
Jesus is Lord!

Post Reply