How to do this job depends entirely on the Wiring Codes or Regulations for the locality (Town/State) and on the exact location of the ceiling pull switch you wish to install. So: a) Go to your local...
For a very good explanation of how to do this, with a diagram, browse on over to the Related link shown below this answer. If you go to google.com and type 3-way switch wiring into the search box...
It all depends on the type of vehicle. Most of them are as follows. Disconnect the wires on the back of the switch, loosen the lock nut on the switch, unscrew the switch from the bracket. Reverse the...