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  • iSimple IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios
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iSimple IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios

by iSimple
| 30 answered questions

List Price: $44.95
Price: $24.12 & FREE Shipping on orders over $35. Details
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Only 9 left in stock.
Ships from and sold by Amazon.com. Gift-wrap available.
  • Universal aux audio input for all FM radios
  • Compatible with any factory or aftermarket FM Radio
  • Play almost any portable device directly through your radio
  • Just tune your FM Station to the RadioMod channel for clear, clean audio
  • Audio connections and docking cables sold separately
See more product details

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Frequently Bought Together

iSimple IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios + Belkin Audio Y Cable Splitter 1-Mini Plug, 2-RCA Plugs (6 feet)
Price for both: $28.07

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Product Information

Technical Details
Item Weight9.6 ounces
Product Dimensions7 x 5.6 x 1.9 inches
Item model numberIS31
WarrantyONE YEAR
Weight9.60 Ounces
  
Additional Information
ASINB002U5XPBE
Shipping Weight9.6 ounces (View shipping rates and policies)
ShippingThis item is also available for shipping to select countries outside the U.S.
Date First AvailableMay 15, 2009
  
Warranty & Support
Warranty, Parts: Parts
Feedback
 

Product Description

Antenna Bypass FM Modulator

Customer Reviews

Installation was fairly easy.
Brian J. Fussy
Much better sound than through an "FM transmitter".
James Gittelson
This was easy to install and works great!
PilotPeat

Most Helpful Customer Reviews

73 of 75 people found the following review helpful By Jeff W on March 14, 2012
Verified Purchase
I've had this item installed in my wife's car for over a week now, and we're getting so much use out of it I've already ordered a second for my vehicle. That's how highly we think of it.

We both own GM vehicles (hers: 2007 Chevy Malibu Maxx, his: 2004 Chevy Trailblazer) and neither stock radio had an aux-in port for our Apple products (iPad, Nano, or iPod), our daughter's DVD player or PS3, or my Samsung Galaxy S II. We travel quite a bit by car, and we enjoy sharing the entertainment instead of having everyone put on earphones while the driver gets control of the radio by default. We had tried the cheaper FM transmitter, which had mixed results on the Trailblazer. All brands (and we tried 3 different ones) were all a miserable failure on the Malibu Maxx due to the fact that the antenna is located at the rear of the vehicle. Since FM transmitters have a short transmission radius, the antenna was always too far away to be effective. We also tried the Dynex cassette adapter with the Trailblazer, but the audio was murky and muffled.

We don't like removing perfectly good stock radios from our vehicles, so after researching other alternatives on how to integrate our various audio devices, I decided to give the modulator a try. I'm a fairly handy guy, and while I had never gotten too involved with any of my vehicles' wiring in the past, this seemed like a relatively straightforward task. I was pretty accurate. The installation took about 2 hours total on the Malibu, and I'm sure it will go faster with the Trailblazer now that I'm familiar with it.

A few things you need to know:
1) Know how to remove the trim from your vehicle to successfully remove/access your radio. I did a Google search and found the exact walk-through I needed.
Read more ›
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21 of 23 people found the following review helpful By Michael Kesow on June 30, 2012
Verified Purchase
I bought a brand new Suzuki Kizashi and much to my dismay it does not contain an auxiliary input. WHY!? My initial solution was to buy an FM transmitter at Best Buy. After about 5 minutes of usage I knew I'd need a better solution. It reduced the volume by about 30% and constantly had some level of static.

My first FM modulator was the Scosche FMMOD01. I hooked it up and there was constant static at all volumes. I tried two different 12v sources and two different ground locations but the static wouldn't go away. Maybe I got a bad one. But I decided to try something different.

Today my iSimple IS31 came in the mail and I just installed it a short while ago. Now THIS is what I was looking for! I hooked it up to the same power/ground locations as before and am receiving all but zero static. There is a small amount detectable when you have the volume cranked with the MP3 player off. But that is beyond negligible. The volume gets nice and loud and there is no loss in sound quality.

One thing I did which I think makes things a little easier. There are two 12v sources in the wiring harness for the radio, a constant and a switched. The switched only delivers power when the key is turned over. So I hooked up the 12v wire to the switched wire and eliminated the on/off switch that comes with the iSimple (just cut the plug and solder the two wires together)
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9 of 11 people found the following review helpful By Amazon Customer on September 30, 2011
Verified Purchase
Just finished installing in my Mazda Protege 5, no problems ... just find your power and ground wires to/from the radio and splice it in. No adapter needed for antenna on mine.

Sound is good and clear from my Blackberry. I like Classical so needed something without all of the background noise of an FM transmitter.
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2 of 2 people found the following review helpful By Joe Sixpack on May 19, 2014
Verified Purchase
Installed this on an older Honda Goldwing (1998) to be able to use a CD player, iPod, etc. Works exactly as advertised.
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2 of 2 people found the following review helpful By Clayton Kerr on August 29, 2013
Verified Purchase
I have a work truck that I am not allowed to change the stereo in. This was my work around to a Aux-in jack to listen to my music through. Stand alone FM Transmitters did not work in my work truck very well, but this works like a champ. Only complaint is the gain is a little low, so even with it turned all the way up, the local radio stations are still louder.
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2 of 2 people found the following review helpful By JP on June 26, 2014
Installed into '04 Chevy Silverado. It would play an MP3 player for about 5 seconds then start cutting out and finally back to static. If you turn the switch off for a few seconds, it would sometimes play clearly again for about another 5 seconds...but would ultimately repeat the fade out to static.
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1 of 1 people found the following review helpful By Matthew Willingham on June 21, 2014
Verified Purchase
I bought the iSimple IS31 Antenna Bypass FM Modulator in January and I have had it for about 6 months. It stopped working 2 months ago. I'm just barely getting around to writing this review. The install was fairly quick. However, I did have to buy an unexpected wiring harness to make this product compatible with my stock truck stereo. I was not informed of the possibility of needing an additional harness before I purchased this product.

Additionally, the product only lasted about 3 or 4 months before it stopped working. If I try to use it now there is just a very loud clicking noise. It is so loud that you can't even hear any music that you try to play. I have pulled the the stereo out since to check everything on two different occasions and everything still looks the same as I left it. None of the connections are loose and all of the wiring is good. The only possible explanation is the Modulator is broken. When I bought this product I read the reviews and saw a number of them saying that this product didn't last the six months. I thought that was just on a few separate occasions however, that proved to be a mistake on my part.

After spending the money on this Modulator, the Input Adapter and the unexpected wiring harness, I would have been better off spending a few extra dollars and just buying a new stereo with an aux input. Don't buy this product if you are going to want to use your mp3 player for longer that 3-6 months.
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Most Recent Customer Reviews