Ok well the manual AC knob on my 300D, the light went out. I thought the knob came off,a nd you simply replaced a bulb. I was wrong! The whole section comes out, with the spring loaded brass plunger that contacts the back to provide voltage. Is there any way to replace the bulb, or do I need to find a new knob?

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1976 300D
190,000 Miles
Colorado Beige

1975 300D
Parts Car
78,000 Miles
Rustbucket
Also Colorado Beige

1984 190D 2.2 (Dad's)
156,000 miles
Champagne Metallic Clearcoat