ePer shows two part numbers before and after a change in May 1995 described as "ADOPTED SLIDE CONNECTION INSTEAD OF MULTIPLE REMOTE CONTROLSWITCH MINITIMER"
It looks as though the "old" connector was a small rectangular 2 pin shape with an extra single pin round connector, and it was changed to a single rounded rectangular 3 pin connector, so make sure you get the correct type.
OE part numbers are 7619303 before the change and 7785973 after, use these to find the part, cost around £20-25 and upwards it seems.
PS: get one with the correct connector, don't get the "universal" type where you have make the connector up yourself, or try to join the wires into the existing cables, the wire from the lambda sensor are very tough to cut and solder.
2000 Pearl White Plus & 1996 Portofino 20vt
1985 & 2016 2017 Fiat 124 Spider + XF Sportbrake