How hard would it be to change the following on a 1988' jeep wranlger 4.2 6cyl...?

[wiley_d_09]

ignition system, coil, ignition switch, ignition module...or to check if they are working right

 

[Eric F]

fairly easy..
it's an inline 6, the coil is 3minute swap, ignition system, meaning plugs and wires.. pretty easy to change those.
ignition switch is under dashboard, probably mounted to steering column on the topside.
module is either under the distributor cap or mounted close to it.