If the ignition switch was bad, I would expect it to be intermittent and susceptible to vibration or 'wiggling' - it's not. Once the 'relay' makes contact, it ALWAYS makes contact (at least through MANY retries). It's only the FIRST (or couple) switch activation(s) that fails. Once it makes, it stays made. Seems more like a relay to me...
94 HR - C8.3/250, Allison 3060 - 104k miles.
1994 HR Imperial 36W Cummins 8.3/250 (upgraded to 325 HP via TstProducts.com) Allison 3060, PP TPMS, pulling 28' enclosed trailer. Looking for input from other mid 90's HR DP owners.