1) If you want the wishbone as a complete part - that has a Citroen part number that you can use to purchase or use to source an aftermarket one.
In your case it is:
- Left: Part number: 9663980680 (Citroen Price, £160.48 inc. VAT)
- Right: Part Number: 3521S4 (Citroen Price, £224.12 inc. VAT
Or use the above part numbers to search the web - i.e. enter Citroen 3521S4 as your search and not just the part number.
2) As said before they do not always sell bushes or some constituent parts separately. So we cannot get you numbers for parts that are not officially supplied by the manufacturer. There are parts made to counter this in the spare part market, but as to fitting it's pot luck as we have noting to go on.
Lastly - if you have wire coming out of the tyres then suspect your tracking - and if you then say you have had it done recently - my answer would be to go back to the place you had it done - it won't be the first time that an all singing. all dancing, Carlos Fandango laser tracking system has shafted a car. Mine included - had tyres replaced new and later tracked at ATS and 2 months later wires coming through the tyres. Went back and kicked up hell - turned out the bl**dy machine was not calibrated correctly and had an out of order sign on it. Suffice it to say I had new tyres from them and re-tracked elsewhere.