Thanks, bonestock ! Makes sense. We were working a "no start problem", and come upon this.
The part numbers - SUSS CBC-20H3 ; underneath is 12V J1520A.
Guessing it's a circuit breaker, but for which circuit ? Will try re-attaching to the solenoid like yours.
Fusible links all checked out OK.
Bought a CCRM off of Ebay for $43 and installed today. No start, no codes from PCM, but the engine cooling fan no longer comes on when the key is turned on. Fuel pump turns on. Hmm.
Went through the wiring diagrams several times in the Helm electrical and vacuum troubleshooting guide. Only flaw can I can deduce is a design flaw - if the PCM (maybe) doesn't function, then by definition no codes will be produced.
Next up - an $11 PCM, also from Ebay