R33 Nissan Skyline Radio Adapter Harness: Speakers
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.