I have a 1988 Jaguar XJS with the European headlight on. I would like to change it to a quad light (got it from craigsist) and would like to install it. While removing the European light, i noticed that it only has one wiring harness. The quad light needs two (high and low). Can someone guide me (with pictures if possible) on how to replace this European light and what to do with the wring harness. Do i have do buy a wiring harness kit and where ?..Thank you so much for your help.

 

The lights you have now, the European ones, have an H4 bulb, which has THREE terminals and three wires poing to its plug: An earth (ground); a wire that is live for dipped lights; and a wire that is live for main beams.
Using a meter or a test light, find (I) the wire that is live for main beams and (ii) the earth wire.
The inner light unit on your quads is an H1 main beam only bulb. Make a bit of wire with a push on connector for the central terminal of the H1 bulb and splice from this wire into the main beam wire you identified above.
Make a bit of wire with a connector for the earth terminal of the H1 bulb (this will be part of the metal surround of the bulb, usually) and splice it into the earth wire you identified above.
if all correct, you will have all four on main beam and the outers only on dipped beam. As the four bulbs on main beam will be drawing more current than your European lights were, beef up the amperage on your headlight fuses, from memory it is a 10 amp fuse, so use a 20.

 

https://www.sngbarratt.com/us/#!/English/home

Try here. Give then a call. They have a quad kit. I think they sell a conversion cable.

 

is the conversion to quad headlights a bolt in conversion? I have a 1987 XJS and I am located in Southern Ontario,Canada

 

It was for my 96...

 

OP: If you'd like to sell your European kit after making the conversion I'm located in California as well and would be very interested..

 

my left light has a crack in the lens.I am located in southern Ontario Canada so shipping may be prohibitve
John