Knob under dash

[chiefmd]

I have a 1973 240z and came across this knob located on the drivers right side. Anyone have any ideas? Thanks

[Kurbycar32]

Purely speculation but it looks like my aftermarket AC temperature knob.  Whats on the back side of it?  On my '74 260z theres just a bolt in that spot.

[Old Hat]

chiefmd,

I have a 72 Z which has the same knob you described and in the same location.  Mine operates as a dimmer switch for the dashlights.  Presumably, yours has the same function.  Hope this answered your question.

Old Hat

[grannyknot]

As Old Hat says, it's a instrument light dimmer switch, why anyone with a Datsun would want those lights dimmer is beyond me, can barley see them now.

[chiefmd]

I was thinking it might be a dimmer, just need to check it out. Thanks for all the input.

[Captain Obvious]

3 hours ago, grannyknot said:

why anyone with a Datsun would want those lights dimmer is beyond me, can barley see them now.

You got a nice dark location to put my car during the day? I'll show you my dash lights. You'll never be the same. 

[jfa.series1]

52 minutes ago, Captain Obvious said:

You got a nice dark location to put my car during the day? I'll show you my dash lights. You'll never be the same. 

Dark places?  I'll show you mine?  Sounding a bit kinky. 

[Captain Obvious]

That's how I roll?