Hello All. My 84 Vette has the late C4 headlight upgrade. The module only opens one headlight and the circuit board is kinda burnt by the transistor. I took a module from a 91 Firebird and tried it on there and it doesnt do anything. Can anyone tell me what is different about these modules? I can get the Part #'s off of them if you need. I would like to make it work somehow cause the module is very expensive new. Thanks.