Japanese Radios JDM : Different frequency
We have seen and heard people say some odd things over the years, about differences between things in the US and Japan. This is one of the actualdifferences. The FM radio frequency range for JDM radios is 76 mHz to 90 mHz. The FM range in the US is from 88 mHz to 108 mHZ. https://en.wikipedia.org/wiki/FM_broadcasting_in_Japan So as you see, there is small amount of frequency crossover. Normally this means you can get some jazz, college rock, or Radio Disney in LA. These are 1990's cars so they often have CD players, CD changers, and even mini disk players. Mini Disk never got popular in the US, but was really popular in Japan.
Often times radios are removed in Japan, the car buyer in the US can install their preference. Some people never use the radio. Other people spend $20k on their car stereo. Sorry bluetooth is a relatively new option, so it is not likely to find a car with a bluetooth radio.
One good option for Bluetooth streaming is a cigarette lighter. We have used a few different types, and they work well enough to get some music into the car.
For an R32 Nissan Skyline, the parts you need to install a new radio are below. There are also some things called range or band expanders, but for the price, and hassle it might just be more worth it to install a new radio.
Along with the radio, making the install a little easier are two adapters. The first is a NIS-A115 Nissan (1987 up) antenna adapter harness. That is from the Nissan twin connector to the standard single that almost all head units use. However if you never use over the air radio, you can skip it if you ground the radio to a bolt. Otherwise the radio is grounded through the antenna.
The next harness to make life a little easier is the power and speaker connector adapter. NN02B (1982-1994 Nissan).
The R32 and R33 use different radio adapter harnesses.
One option if you have a working radio is a cigarette lighter bluetooth adapter. They work pretty well to get bluetooth music from your phone to the car speakers.
Along with the radio, making the install a little easier are two adapters. The first is a NIS-A115 Nissan (1987 up) antenna adapter harness. That is from the Nissan twin connector to the standard single that almost all head units use. However if you never use over the air radio, you can skip it if you ground the radio to a bolt. Otherwise the radio is grounded through the antenna.
The next harness to make life a little easier is the power and speaker connector adapter. NN02B (1982-1994 Nissan).
- Remove shift knob
- Remove shift boot
- Remove ashtray
- Remove stereo surround. (Careful these are now made of platinum, or priced like it)
- There are several self tapping screws that hold the AC and radio in.
- Once those screws are out, the A/C and radio comes out as assembly.
- Most aftermarket radio's will fit right in with either OEM or supplied screws.
Buy USA Legal R32 Skylines at Importavehicle.com!
Buy-R.com for Nissan Skyline GT-R and GT-R parts.
Radio Bracket
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| Nissan Skyline R32 radio bracket part numbers |
Speakers for R32
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| 4 x 6 Kenwood N'Fit plates in the door of an R32 GT-R |
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| Polk Audio separates plates replacing the N'Fit. These are pretty worthless. Buy or build an adapter and put 6.5 inch speakers in the doors. |
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The Bose sparetire sub idea came from my Infiniti FX. It had a decent stereo in it, Bose based. Not award winning, not ground shaking, but decent enough sound. I noticed that it had a subwoofer that was mounted/stored in the spare tire. You can find them on eBay for $60- $100 with the connector. Make sure you get one with the connector. One less step, one less thing to try and find. It just needed power, ground, and signal in. There are many styles of these subs. This one had a single speaker in it.
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| Bose Spare tire subwoofer in an R32 GT-R. I could cut or melt it to fit a bit better, but for now its just tall |
However it fits ok, not great. I flipped the spare tire over, and then put the sub in it. It raises the floor/carpet about two inches I have some ideas about how to make it back to flush, but some involve hammers, some involve welding, some involve spare tires from other cars. I don't want to lose any function, or any convenience.
The only music needed, is made by the sweet sound of an RB26dett. If you want a little more than just engine, road, and tire noise, then this is some of what you need to make that happen in your JDM Nissan Skyline. The R33 have a single DIN slot in the center console. The radios made for the Japanese market, which means they only work on frequencies from 76-90 mHZ. So one choice, if you still have a Japanese radio and buy an adapter, you can get music from your mobile device to your headunit via a bluetooth device.
One option if you have a working radio is a cigarette lighter bluetooth adapter. They work pretty well to get bluetooth music from your phone to the car speakers.
If you are putting a new US headunit in the car, then you will probably need a radio wire harness adapter. The R33- even the 1993 up cars all use this "1995 up - Nissan/Infiniti" harness. If you look at the car side, you will notice it has much smaller pins than the R32 GT-R harness.
Non GT-R R33 Skyline with a double DIN headunit
Speakers
R33 Front Doors use a 6.5 inch speaker Check out the Ultimate Interior Upgrade on Project R33 for some more information.
