KL10 Indicator Cable Set for DEC / Digital Equipment Corp possibly used on PDP-15 system

Early DEC computers often included indicator light panels to show the state of various CPU components and peripheral controllers.

Many of these had cable assemblies with signal driver / buffering circuitry built in.

These cables are labeled KL10 Indicator Board.  I very much doubt I actually scrapped a KL10 (DECSystem 10 CPU), so they were probably used on some peripheral indicator board on the PDP-15 system I had to scrap many years ago.   I tried to determine what peripheral it might have been but was unable to identify it.

This set consists of the following cables:

 3 Ea of PN: 708405-3F  (42" cable)

 2 Ea of PN: 708405-04  (48" cable)

 1 Ea of PN: 708405-4F  (54" cable)

 2 Ea of PN: 708405-05  (60" cable)

Each cable consists of two lengths of 19 conductor Mylar ribbon cable terminated with both an M947C and an M9948B Indicator Cable Connector card.