Multifunction steering wheel retrofit

[Ronin]

One major issue and set back I encountered was that these clock spring connectors and crimps were NLA:



I noticed that I can use the updated part number connector which I've taken from another wheel I had, and I crimped new terminals on it.

Top plug is the new one and bottom one is the original NLA audi


Where i went wrong is that this new yellow connector is used on the wheel side, connecting wheel to clock spring, and on the clock spring side, connecting car loom to clock spring.

The wheel side connector has 2 fans that short out air bag igniter pins to avoid any static build up and prevent any unwanted 'effects' the clock spring side does not have it.




Using the wheel side yellow connector with 2 extra pins on the car loom side caused the bus or 'signal wire' to short to ground each time it was connected.

This caused me many many lost hours, trying to figure it out, in the MJ is the one that spotted it

And lastly, if you are going from a tip only car to mfsw, you have to remove the illumination wire from the plug and move the ground wire and add a switched 12+v feed in correct pins otherwise your shiny new £140 clock spring will turn into smoke and put the horn on till you disconnect the battery

In this pic we can see ground on pin 3 and power on 2, in the tip-only version pin 2 is ground..

Pics of a melted clock spring as a warning: