[Sehrgut]

Why is it that when I rev the engine past 1,200 rpm the radio cuts out? Lights in cabin are O.K., instrument lights O.K. fuses O.K., headlamps slightly brighten to 2,200 and then level off. I installed a new voltage regulator and new Wagner Litebrite sealed beam headlights, and a new-to-me gauge cluster. Darn this is confusing. Problem seems to fade after the engine is good and warm. Any help is appreciated!