Hello, this plug is missing its mate near the brake fluid reservoir. any idea?
I think that’s the ECU jumper cable. Without the bridge wire (missing on yours) the ECU uses a lower octane map. If I’m right and you jump it, the cars performance becomes slightly more spritely!
John6 is spot on. This is the Marelli jumper connector.
AKA the strategy link.
The only way to retard/advance the Marelli ECU timing map.
More info here:
If you want the jumper I may have one from my 94.
If you have any interest send me a text or call to 650-455-1110.
I don’t visit the forums since I don’t have my Jaguars any longer.
Steve