Can anyone help ID this part number ?

[Dirk Leegwater (RIP)]

Originally Posted by James Gosling

Does anyone have any ideas what it might be for?

Hi James,

After Richard's nice quick search about the GMC harness from me
a completion of that. Stock number: 3500-5278504 and Part no:
GM-5278504 let us know: Harness, wiring, dash, assembly (CCKW)
(used with rotary type light Switch).
GMC parts list ORD 9 (15 July 1945) SNL G-508, showed us eight
diffirent dash wirings.

Dirk