95 s10 blazer 4.3 automatic. i replaced 4x4 push button selector switch because 4hi push button broke. now the problem when i try to engage 4x4 the lights dont light up and the transfer case doesn"t engage. i hear clicking from kick panel when i turn key to on position but nothing from transfer case. already did away with vac actuator for front diff and now use locking cable. got tired of it freezeing in winter. the 4x4 worked perfect yesterday and it will not work with old selector switch either. any advise would be great