1982 Kenworth W900A Ignition key cylinder & key replacement?

No prob, love to help on any old KW! Sounds like a button for resettable breaker, but picture is worth a thousand words! Also, we need full specs and pictures of this old girl!

 

The lock with key on first invoice is actually for bunk door exterior handles. Here is part number for key and tumbler kit for cab door and ignition. Was $70 when I bought them in 2019.

 

I replaced my cylinders last month so they all match too

Got them here:
KENWORTH & PETERBILT – Ignition Lock Set (P Key Code)

You can specify the key code so they match your old keys or what the truck originally came with

 

My 1996 k100 has a orange a black and 2 reds one of the reds runs over to starter button you can buy any 3 position switch mine went out a year ago while on the road I was in walking distance of a Home Depot I went in and got a riding lawnmower ignition and keys worked like a charm till I could get home mine also uses post style connections with a backing nut hope this helps

 

If it’s not a momentary switch for the start circuit put a light on the center pin on the trailer cord. I’ve seen a few built with the trailer hot line breaker by the ignition switch.

 

Sorry for the late response. Back with that vintage 50% of the wires were 14 gauge. The rest were 12ga and larger. 99% were all one color “Black” but were marked with banded numbers made of paper. Color coding didn’t become a thing with Kw until the B model era. Same with Pete. Started with the new 379 cabs.