Where can relays for the 96 XJS be purchased? ECU, fuel pump, ect.

 

The colored Hella box relays? I don’t think they’re anything special. eBay, advance auto, basically anyplace you would buy car parts?

You want to note:
1. Number of pins (usually 4 for us)
2. Amp rating
3. Normally open or closed

I think that’s it. Do an eBay search on “12v relay 4 pin”

 

First, I have no direct experience with the later XJSs.

That said, a lot of the relays used on Jags are generic BUT some caution is required. A lot of relays look the same at first glance but operate differently.

Some relays have a built-in diode. These cannot be replaced with a generic substitute. Usually the relays have a small diagram on the case. Look for the diode symbol. And, if you buy a replacement relay with a diode make sure it is pointed in the right direction !

Also look for the pin designations. Most common is 30-85-86-87-87A but Jaguar (and others) often used relays with a different configuration/operation, 30-85-86-87-87. These are often called "dual 87" relays and operate differently.

Some circuits use a 30-85-86-87 relay. In those cases a 30-85-86-87-87A replacement can usually be used, the "87A" terminal simply being left unused.

Cheers
DD