Gary:

Becker Grand Prix?

Loose front faceplate, it snaps into place with a large vertical connector just to the right of the cassette slot. Make sure it's completely snapped down (audible shap as the connecter seats). When loose, the radio works without the key on.

If it's not a Becker or Alpine, it's aftermarket and you are on your own (but it's very likely a loose connector). If the wiring has been spliced, for sure it's aftermarket and you have a bad splice.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!