Add a power switch to an EM that has none

Steps

• Unplug the game.
• Cut the black (hot) conductor of the power cord where it enters the game, ahead of the fuse and transformer (white is the return).
• Splice a length of line cord (about 5 feet) into the cut, one conductor to each side.
• Run the new cord to the front of the cabinet and drill a hole in the cabinet floor.
• Fit a single-pole single-throw switch in a small plywood block (about 3 x 3 x 3/4 inch) and screw the block to the cabinet floor with the lever through the hole, so the lever doesn't stick out below the cabinet.
• Connect the two leads to the switch and insulate the splices.

Unplug the game first: the power cord, fuse block and transformer primary carry 115 V line voltage.

Systems

• Electro-mechanical

Related tips

• Where the power switch is
• Fitting a new power cord, ideally three-prong
• High tap: a little more coil power from the transformer
• Shock from Gottlieb coin door coin switches

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part Two, Clay Harrell (pinrepair.com)