This bracket is attached to the cabinet just inside the hinged side of the coin door on most Williams/Bally WPC-era machines and Jersey Jack Pinball machines.

It holds the high-voltage interlock switches.

This bracket is often missing due to operators removing them.
Games with no interlock switches (or brackets to attach them to the game) can put you at serious risk of electrical shock.
This is the bracket only.  Switches are not included.
Also referred to as #01-12676.
JJP reference #10-000089-00 & 51-000035-00.

Used in many machines, in example:

BALLY
ADDAMS FAMILY, ADDAMS FAMILY GOLD, ATTACK FROM MARS (Bally), CACTUS CANYON, CHAMPION PUB, CIRQUS VOLTAIRE, CORVETTE, INDY 500, NBA FASTBREAK, POPEYE, SAFE CRACKER, SCARED STIFF, SHADOW, THEATRE OF MAGIC, WHO DUNNIT, WORLD CUP SOCCER 1994,
WILLIAMS
CONGO, DEMOLITION MAN, DIRTY HARRY, FLINTSTONES, INDIANA JONES (Williams), JACKBOT, JOHNNY MNEMONIC, JUNKYARD, MEDIEVAL MADNESS (Williams), MONSTER BASH (Williams), NO FEAR, NO GOOD GOFERS, ROAD SHOW, STAR TREK THE NEXT GENERATION, TALES OF THE ARABIAN NIGHTS