AC VACUUM SWITCH 2571501 AND 2096084 QUESTIONS
Hi Steve.
You can pinout the new and old switches.
- Choose one terminal to be the starting point.
- Attach one lead of your multimeter to it and leave it there for now.
- Put multimeter in ohms mode
- Put the switches in the most off position.
- Touch the other lead to each of the other terminals
- Note which terminals are open and which have continuity.
- Now switch one switch and repeat the process
- After all switch positions have been tested you will know which terminals have closed contacts when the switches are in a particular position.
You can do the same for the vacuum part of it. But with a vacume source (probably a low pressure source would do the same.)
If you can, from the wiring diagram of the 67 and the donor year, determin which wire it the main feed that is helpful.
There might be diodes or resisters in the switch so conducting the same test with the leads reversed will show that and also confirm the pinout
Good luck to you
