Trying to put wiring back together on Sofia's restoration

[Sambo42]

So I have ordered a new Lada switch but in the meantime I thought I would take apart the old switch and see if I could work out what was going on. Looks like it's a very different beast (same terminal numbers on the back though) and easier to take apart. IHaving taken it apart and put it together I *think* there's only one way it goes back together, and if that's the case then I don't understand it all. I got out the multimeter to check which terminals were connected (ie near zero resistance) in each key position, then checked the contact positions to verify. I'll post pics below but as far as I can tell:

- in the 'OFF' position, both INT and 30 are connected
- in the 'RUN' position, INT and 30 are connected, and the 30/1 pin is connected to 15 (small contacts behind the terminals get connected together - hard to show in the photos, but will try and take another pic
- in the 'START' position, pin 50 is connected in to INT and 30

The contacts get made along this pathway:


Here is the back of the ignition switch - same pin nos. ('16' x2, INT x 2, 30/1,50, 15, 30)


and a view of how the pins connecte to the copper pathway:


and my drawing of where the pins are in the 'OFF' position


and the 'RUN' position; in addition two contacts close to connect pins 30/1 and 15; when you turn the key to START a second contact joins 50 to 30

[Johannes]

Hello Sambo,

the Lada switch works differently than the original Fiat-Sipea switch, because on the Lada switch you have power on INT even in the LOCK position.
My switch has 4 positions, LOCK-OFF-RUN-START. I think you messed up the LOCK and OFF position.
My switch is currently wired that I have power on INT even in LOCK position, I´m not sure if I should change the wiring, since I´m adding a power-off switch at the battery.

This is an extract from these instructions (https://www.mirafiori.com/faq/content/s ... witch.html):

Left Side:
First is the Bl/Bk -Brn-Red
Operation Explanation

Position 1 (Off) None of the wires are connected
Position 2 (Run) Brown(30) is connected to black(30/1)
Red is not connected
Position 3 (Start) Brown(30) and Red(50) (starter solenoid) are
connected to black(30/1)

Right Side:
Blk-Pink set
Operation Explanation

Position 1 (Off) None of the wires are connected
Position 2 (Run) Pink(15) and Black(30/1) are connected
Position 3 (Start) Pink(15) and Black(30/1) are connected

I recommend to have a look at this explanation of the electrical basics from Brad Artigue, also an instruction to wire the Lada switch:
https://mirafiori.com/forum/viewtopic.p ... 53ec0aae82