'73 240Z Rear Defroster

[pak52]

No, not directly, however, indirectly it looks open, because I was able to jumper around it and make the circuit work.

[pak52]

Looks like the part is no longer available. Anyone had any luck finding a source?

[SteveJ]

Did you call MotorSport Auto? They have the switch in their online catalog.

Other options:

1. Try to rebuild the switch.

2. Get a used switch.

3. Get an illuminated rocker switch from Radio Shack or similar source.

[EScanlon]

Rebuild the switch. It's a lot easier than it sounds. You can also swipe the guts or the switch itself from another console cover.

E

[pak52]

Cleaning the switch turned out to be fairly simple. The bulb case pops off the side of the relay revealing the guts. Cleaned with contact cleaner and a small brush. Works like new.

[pmajor9]

Here is a 1972 240Z Series III schematic. It has been reliable for me. I have added a small map at the bottom that partially traces the path from the ignition switch to some major components.  (I did a lot of work making it large to aid in distinguishing colors.)  

Anything related to automatic transmission or air conditioning has been faded out.

The 20A fuse for the defroster circuit is a small distance to the right of the fuse box.

I've found at least one inconsistency on my car: the yellow/black leading from the windshield washer tank does NOT change color after coming through the firewall.  I'm doing some stuff with battery disconnected so haven't tested that path beyond that point yet.

I couldn't resist adding a pic of my baby.

 

 

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