Black ink applied to the horn push, I dropped a note round to my neighbours house asking if he had any ink and he did, bingo.

Wires fitted, two of the original connectors didn't make the process of wire removal, oops.

Front of the horn push looking lovely.  

The mechanism now slides on the aluminium ring that engages with this pronged washer following application of some lithium grease.

The horn push doesn't cancel correctly on one side so I need to investigate that a little more before I fit the lot in the car which will be on Saturday with any luck.