No, they are not worth messing with....really great head units can be had for $50 and come with bluetooth, etc....just upgrade it!
Save the old one to put back in if you sell it. Or find a good OEM unit on Ebay...
'95 Ranger 5.0 GT40X Tri-y GT40 Intake S-Trim Snow Stage 2 Lowered Baer Racing Brakes Viper Spec Tremec w/Hurst shifter Custom Interior Dakota Digital Dash Corbeau Toplines OZ Racing AM/FM/Mp3/CD/DVD/TV.
2014 GTIG 5.0 Vert Base. Sil Carb Fiber dash. Bama Race Tune. Gibson axle backs. STEEDA Springs KONI STR.T Adj. Panhard. Dynamatted. Audiocontrol LC8i Amps and Sub! Leather OEM seats. Custom Badging.