Hello Das,you will need to understand wiring diagrhams.Firstly try to find a common area that these componants share ie earth or live and then try to trace.Try to minimise your list,as you have a lot of faults and this could confuse you and me.I will help out as much as i can if you forgive my spelling mistakes i will forgive your grammer.Try bently publishing for wiring diagrhams.Heres some help witk reverse light,disconnect the switch at the gearbox and bridge the two terminals with a peice of wire,see if the lights work,if yes replace switch,if no check 12 volt and earth at switch.Again the a/c and wipers will have seperate fuses.Wiper motors can be difficult to check,but make sure you have a good 12volt feed.Hope that helps for now.
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