Radio - Alternator Whine in Left Channel
Bulletin 86-9-5Date Jan. '86
Ref. No. 86-056-9
SUBJECT: ALTERNATOR WHINE - LEFT CHANNEL
MODELS AFFECTED: 1985 AND 1986 ALL WITH 2000 VF RADIOS
The ground wire used in the instrument panel harness may cause a ground loop that may result in alternator whine heard in the left channel of the radio.
If alternator whine is heard, remove the ground lead (black wire) from the black 4-pin connector in the back of the radio. If the alternator whine disappears, correct the condition by doing the following:
1. Cut the black ground lead in the black connector.
2. Use a piece of 16 gauge wire, attach one end to the chassis of the radio and the other end to a good ground close to the radio. When attaching the wire to the radio chassis, use one of the chassis case screws or a mounting lug.
3. Reconnect the radio.
This will not eliminate all alternator whine conditions.