Door Light Switch

[lundwc16]

The plunger type light switch that turns the interior lights on when the door is opened gave up, on our 2010, 3075RL. I have looked for a replacement at a couple of RV dealers, both big box stores, tractor supply, Trekwood, and electrical supply house with no luck. The lights still work with the inside wall switch, & I have 12 volt to the plunger switch, so I know it's the switch. Any ideas.
John