Q: How Do You Clean, Remove, Install, and Test the Switch?A: Disconnect the switch electrical connector at the side of the transmission. Remove the switch from the transmission by turning it counterclockwise. Installation is in reverse order of removal. To test the back-up light circuit remove the electrical connector at the switch and install a fused Jumper wire between the two electrical terminals, turn the ignition switch to the on position and the back-up lights should operate.