1997 BMW Z3 Electrical Problem

1997 BMW Z3
88,000 MILES • 2.8L • 6 CYL • RWD • MANUAL
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1997BMWZ3
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I have had my BMW Z3 for 3 years and everything has been great, up until this last week. Installed a aftermarket radio a year ago with no problems.

Symptoms:
-Put the keys in and turn the car over, and the Multi-Information-System (time, temp, mileage) resets.

-Driving with radio on, and ac on, randomly the ABS and traction control lighting would come on momentarily. Came on and off 10 times within a 15 minute window of driving. Never stayed on for more than a second.
-In association, with these lights coming on, the odometer would dim, radio volume would dip, and AC fan speed would dip.

Any suggestions would be great. Thanks.
Nov 9, 2015 at 12:45 PM
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DOCHAGERTY
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It sounds like its time to go to see your BMW repair facility, the issue seems to me to possibly be a "comfort" relay is dropping out momentarily. It could be something of a hair puller to diagnose from the internet
Nov 9, 2015 at 1:53 PM