Simple enough to do, as mine is a pre 94 all the lights connections are bullets.
Only problem I had was a bad earth.
The rear lights fitted over the existing holes, just needed to drill two new fixing holes per light.
The front side and indicators where cracked, so got some direct replacements and put led bulbs in them.
The headlights where a bit more complex as the bowls at the back where rotten.
Also the new headlights need a feed from the side lights or I could have run in another like. Make it like a DRL.