I would assume, having looked at the pickups that as long as you have a 4 conductor pup, you should be able to wire them in with little or no problem. The probelms I see is the mounting of the pickup. Just matching up the wires. Sorry, after looking at your post, I did not see if it was for a Standard or an HH. Duncan makes direct replacements for the Jag I beleive.
Sarge