My 1989 242ss has cracking across the dash... I am assuming from the previous owner never covering the helm and dash. It looks like long cracks from the sun beating down on it for 20 years (Unfortunately this model does not have the cockpit cover that also covers the windshield like my old 206LS). There are probably half a dozen long cracks (Not spider cracks)

Is there any reasonable fix/repair for cracks in black plastic? Without replacing it or taking the whole helm/dash out.....