[j cAT]

the radio amp is creating the pop sound thru the speakers. cheap radios do have this problem/not good for the speakers. I would remove the radio and check that the wiring is secure and the radio is grounded/ground wire secure to a good ground.

crutchfield my have some kits/radios for you vehicle fit. if they do , buy the interface wiring kit , to properly connect to the on board vehicle connector . rather than hack up the wiring and possibly mess up the vehicle/radio.