Stop in for a cup of coffee

Any of you guys know what the CH codes are on some mopar electricals? Stock number ? or cross back to the supplying company?
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In this example the top stamped number is the Chrysler part number.
But sometimes I see stuff w/o the chrysler number.
The CH numbers are the shelf numbers instead of using the long Mopar part number. Aftermarket did that a lot. Ch for Chrysler corp, DR for Delco Remy, and FO or FD for Ford.