Regal V6-231 3.8L Turbo VIN 7 FI (1986)
Radio/Stereo: All Technical Service Bulletins
Radio - Alternator Whine in Left Channel
Bulletin
86-9-5
Date
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.
