No XM radio detected when I toggle through my sources... also no FM reception

The JVC KD-G421 only shows the option to change EXT IN from the CD changer to EXT IN when the current source is FM, AM or Disc . See the following page at ManualsLib: https://www.manualslib.com/manual/81662/Jvc-Kd-G421.html?page=15#manual . Assuming the J-Link cable that you added is the KS-U57 or KD-US58, the unit is still looking for (and not finding) the CD changer. Press the SRC button repeatedly until you get to FM or AM. (Disc will only show if there is a CD in the CD slot.) Then try pressing and holding Sel. Use the fast forward/up or fast reverse/down to get to EXT IN on the display. Then turn the tuning knob until EXT IN is selected. Press Sel again to save the setting. Now see if the EXT IN is listed when you press the SRC button. Page 13, https://www.manualslib.com/manual/81662/Jvc-Kd-G421.html?page=13#manual , shows the general procedure for setting the preferred setting mode.

I hope this helps.

Cindy Wells

It simply means "source". These radios typically have AM/FM, CD, auxiliary (1/8" plug), USB, and some XM/Sirius input selections. The source button is how you choose.

You can download the manual from the manufacturer's web site at
http://books.jvc.com/booklist.asp?Model=kd-r610

You need to have one wire on an always 'hot' power feed. Be careful, as some GM products have a timer that shuts off the power after a 10 minute timer, so that could be your issue. Are you talking about a factory installed XM, or one like the photo above?

this links will take you to a page to download the manual, it will help set the time on the unit...and anything else you need

hope it helps..:-)

http://www.retrevo.com/support/JVC-KD-DV4200J-Car-Receivers-manual/id/989ci853/t/2/

Are you playing it directly thru your FM antenna connection, or using the RCA jacks? You have to set the FM modulator level. It is also possible that you have a new FM radio with a type of ALC that will raise the lever regardless, but your regular car radio volume control should work. do not wire this directly to a power amp, as you won't have the control that you need. Good luck, let me know more.

Wife bought me a new JVC KD-S16 in dash cd player/radio. Is this a good unit?

The most common way is to use the auxiliary input of the deck or head unit. However I don't believe the JVC model you have has one of these. Don't despair though. Head to your local department store with a music department and pick up a universal FM modulator ($20-$30).

These will 'pretend' to be an FM radio station inside your vehicle. Attach the stereo mini plug to your walkman or other audio device (mp3 player etc.) Then tune the FM Radio to the fm station listed on the FM modulator and you will be able to listen to the device through your car stereo speakers. Now this isn't as clean as a direct hookup but for most its an economical way to listen to alternate sources on your Car Stereo.

U need to order the Terk XMD1000 Direct XM Tuner Box. Its Search on the internet for it.I bought mine on xmradio.com. Cost is 49.99. Its comes with the antenna and box. Your XM radio code is on the box. Go aline and setup an account with SiruisXM and its going to ask for that code. once you do that. Ensure you are not under any cover to get a good signal and it will tell you to go to a certain channel. Then you will be pulled in. if you have any issue contact me at [email protected] or [email protected]. I will walk you through. Good luck.

I heard we might need a new terk adapter