240 More on 240 Power Mirror Switches

As I mentioned in my last thread about disassembling 1985 and earlier 240 power mirrors,
http://forums.turbobricks.com/showthread.php?t=355697
I've been working on a page detailing everything I can about 240 power mirrors, mirror switches and electrical circuits.
https://www.240turbo.com/240-powermirrors.html


Johnnya101 peaked my interest (and my OCD) with his 240 mirror switch cleaning guide when he said:

I was unable to find ANY information regarding Volvo 240 power mirror switches.

Click to expand...

One thing I have begun with is testing continuity on EARLY versus LATE switches. Johnnya101's thread had a comment (post #12) about someone installing an early switch in a '92 240, which "worked as expected" according to the writer, but after I saw the results shown below, the "worked as expected" part has given me a challenge. This will eventually be figured out, but I just wanted to show you people this and gather more insight if anyone has any, since on the surface these two switches appear very, very incompatible.
Dave B

Looks great Dave. Very clear as to why they are not the same and what connects to what.

Also,
For those who wanted to know how similar the Saab/Porsche mirror switches are to Volvo switches, I disassembled a Saab 900 switch. The Saab switch BTW is the exact same switch used by Porsche.

CONCLUSION: The Saab/Porsche switch is IDENTICAL to the EARLY VOLVO switch in EVERY way, except for the joystick length. The Saab/Porsche joystick is longer, however the joysticks are fully interchangeable if you dismantle it.
Dave B

dbarton said:

For those who wanted to know how similar the Saab mirror switches are to Volvo switches, I disassembled a Saab 900 switch.

CONCLUSION: The Saab switch is IDENTICAL to the EARLY VOLVO switch in EVERY way, except for the joystick length.

Click to expand...

I can confirm this. I installed SAAB power mirror switches in my '85 245Ti and they operate both mirrors perfectly fine.