Hi, How hard is it to change the coil on an A/C compressor? It's on my 1990. I do not have a service manual. Can it be done without disconnecting the hoses? The clutch is not engaging. When I hook the coil to the battery I don't hear it click. Dan Wing Imp1983@xxxxxxx 83 Imp, beige, Turbine wheel covers, factory/dealer carb conversion