OEM 2-to-4 channel standard sound adapter harness Fader type:Flat blade (86 and earlier) With this adapter you can

With this adapter you can run an OEM 4 channel radio like the CM5908 or KE83-ZBM without a trunk amplifier in a car with 2 channel radio-only wiring

This service assigns a functioning security code to a factory radio

Rear channel adapter: works with the trunk amp bypass adapter to connect your rear speakers to your radio

NOTE: Also works for 4 channel radio installs in cars built ONLY up to mid-89

3) Return shipping will be added to your order

OEM 2-to-4 channel standard sound adapter harness Fader type:Flat blade (86 and earlier) With this adapter you canNo longer available from BMW. Plugs into fader connector of a 2 channel standard radio only audio system. With this adapter you can run an OEM 4 channel radio like the CM5908 or KE83 ZBM without a trunk amplifier in a car with 2 channel wiring. Picture is the round pin fader connector version. Flat blade connector version for pre 87 cars also available