does a pug 306 (95) have a relay on the electric windows circuit

Yes, it is on the second block in the dashboard.

l have the entire wiring diagram for ur car.
Your car is a phase ONE 306, with 13 fuses in the fusebox. Fuse box is located down low under the dashboard by ur knee. (sorry, l am only familiar with left-hand drive 306)
On my BF13 (13 fuse) diagram, there is NO ELECTRIC window schematic. But l am guessing it is similar to the newer Phase TWO schematic described below:

Does ur 306 (1995) have 30 fuses in the fusebox??? l do not think so, that would be a Phase two car after 1997. But in case l am wrong..

Then, there r TWO relays used for the electric window.
The first relay is for the front windows. It is controlled by a 30 amp fuse in fusebox location #29 .
The second for the rear window. It is controlled by another 30 amp fuse, # 10 in the fusebox. (PERHAPS ur older car is controlled by fuse #10?)

It looks like the relays will have 4 prongs on their bases. with little numbers 1, 2, 3, 5. (no #4)