Sound System OEM trunk amplifier access harness kit radio or contact us with a

or contact us with a picture

If your car originally came with 4 channel radio only wiring (available starting mid-89)

Flat blade connector version for pre-87 cars also available

MANDATORY: Please select one of the following options when ordering:

instead of trying to modify your originals

Sound System OEM trunk amplifier access harness kit radio or contact us with aTaps into the trunk amp connector of a car with BMW Sound System. Comes in several different versions at different prices to support your exact wiring needs and budget. This harness preserves your car's OEM wiring while also tapping in safely to all key signals you need from your audio harness via the Quadroboost trunk amplifier connector plug. Please select the version of this harness required for your project. All versions include access to the