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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
| 34 answered questions

List Price: $60.00
Price: $21.99 & FREE Shipping on orders over $35. Details
You Save: $38.01 (63%)
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
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62 new from $19.39 2 used from $19.05
$21.99 & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

iSimple IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios + iSimple IS335 Dash Mountable Auxiliary Input Adapter
Price for both: $32.68

Buy the selected items together

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  • Buy Used and Save: Buy a Used "iSimple IS31 Antenna Bypass FM Modulator for Facto..." and save 68% off the $60.00 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the "Amazon A-to-z Guarantee". See all Used offers.

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)
ShippingCurrently, item can be shipped only within the U.S.
Date First AvailableMay 15, 2009
  
Warranty & Support
Warranty, Parts: Parts

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
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Product Description

Antenna Bypass FM Modulator

Customer Questions & Answers

Customer Reviews

This was easy to install and works great!
PilotPeat
Took about about 30 minutes to install, and it works great.
Ashley
Much better sound than through an "FM transmitter".
James Gittelson

Most Helpful Customer Reviews

76 of 78 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.
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24 of 26 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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7 of 8 people found the following review helpful By Ponce de Leon on March 21, 2013
Verified Purchase
I have a 2002 dodge pickup that is going to be replaced soon, didnt want to spend money on a new stereo just for an aux in jack, and the transmitter i've been using finally died (a violent death, it really pissed me off one day)
This was about the same price as another transmitter, didnt have to tear the truck apart for the install, and I can deinstall it for the next vehicle if I have to.

Local stereo shops were selling a similar product (sometimes even the same product) for $100 + install, so i figured i'd save a bunch and get it here.

Installed it in less then an hour after picking it up from the post office.

Here are a few tips.
1. You WILL need either a RCA to stereo (L/R red and white to single 1/8th mm plug) or a RCA to apple connector cord to use this. If you dont have either one, order it at the same time. (I actually had a Belkin Audio Y Cable Splitter 1-Mini Plug, 2-RCA Plugs (6 feet) sitting around, so I was ready to go from the start.

2. Most mopar vehicles use standard antenna jacks. A lot of other vehicles will require an adapter. Walmart and most stereo shops carry the adaptors if you need them.

3. A lot of cars have a in-line connection in the antenna cord somewhere within a foot or so of where the antenna comes into the car. In both my Dakota, and my Grand Cherokee, it was located behind the panel, on the corner where the antenna was. If you can find this, you dont have to tear the dash apart to plug in behind the stereo.

4. If the cable is long enough, wire the positive to the radio fuse using a fuse tap. If not, consider wiring to a circuit thats only hot while the car is on.
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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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Most Recent Customer Reviews

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iSimple IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios
This item: iSimple IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios
Price: $60.00 $21.99
Ships from and sold by Amazon.com

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