Any electricians out there

[Zedebee]

2003 E85 3.0i Auto.

I am installing flappy paddles. I have got the steering wheel with flappy paddles, a slip ring with the right connections and all the wiring. The wiring should be really simple. The flappy paddles just provide a “ground” when activated, which mimics what the sequential +/- lever does. I have spliced two wires into the gearchange and if I ground these wires in “sport manual” mode they change the gear indicator up and down - so far so good - but the flappy paddles do not work.

I need to test whether:
(A) the flappy paddles are providing a “ground”; and
(B) the slip ring is carrying the “ground” signal to the wires spliced into the gearchange.

I have a multimeter. How do I test both of the above?

Photo of all the steering wheel wiring for reference.

668A020B-2CB1-4413-874D-763C997F7224.jpeg (156.99 KiB) Viewed 140 times

[Pondrew]

Find a good earth (ground/ negative) on the car. Stick your meter in 'continuity' mode, put one lead on the good earth and the other on your negative and you should get a 'beep', and/or 0 ohms if your ground wire is good. The higher the ohms reading, the worse the connection with earth on the car.