I just put a radio in. My power antenna was doing like yours, then kaput after turning on the radio a few times. I have a temporary one in until I get a replacement (aftermarket).
But the following info should help: (note EIA is "Electronics Industry Association" standard) which all aftermarket radios should follow.
1984 - 2001 MOPAR Radio Wire Harnesses
Description, OEM Wire Color, EIA Wire Color, Comment
Chassis Ground, Silver Braid or rear bracket, Black, bolt|stud|spade at the back of the radio
Grey - Feed - Mono connector - only one on single speaker systems
[start opposite from key notch]
Battery positive, Pink or Pink w/ White (Red), Yellow, BAT clock and memory power
Ignition Accessory, Red w/ White (Red/DkBlu), Red, ACC radio power
Radio Dimmer Wire, Orange [OR], Orange w/ White, ILL dashboard illumination dimmer
Headlight Dimmer Wire, Black w/ Yellow [BK/YL], Orange, PARK headlight on signal (display dims)
Right Front Spkr (-), Blue w/ Red, Gray w/ Black, RF- to single speaker +
Left Front Spkr (-), Brown w/ Red, White w/ Black, LF- to single speaker -
Mute, , Brown, MUTE
Black - Speaker - Stereo connector - not found on single speaker systems
[start from key notch]
Power Antenna/Amp, White, Blue, ANT (also amp)
Left Rear Spkr (+), Brown w/ Blue, Green, LR+
Right Rear Spkr (+), Blue w/ Orange, Purple, RR+
Left Front Spkr (+), Dark Green, White, LF+
Right Front Spkr (+), Purple, Gray, RF+
Left Rear Spkr (-), Brown w/ Yellow, Green w/ Black, LR-
Right Rear Spkr (-), Blue w/ White, Purple w/ Black, RR-
note EIA Orange/Black = Dimmer Ground (neg. trigger circuits)
