Re: side markers into UK spec headlight units.
the corner light is 194, i believe my XJ was 3157--i forget though..
the headlights are a PITA to remove for some but someone whos done it a once or twice can easily remove them. the worst bolts to remove are the bottom two-more particularly the one closer to the fender.
wkjeeps.com has a PDF for you to follow. check it out. gl though