I've got a 94 FZJ and unfortunately my Pioneers were NOT a direct install. For some reason the magnet on the rear of the speaker hit the Metal window run. The gap was more than 1/4" and may have been 3/8". Unfortunately it was to much of a gap, so I went ahead and took the speaker grilles off the door panel and installed them on the outside of the door panel and put the Pioneers covers on. They sound better than the old ones, especially since I found the p/s speaker totally missing....

. No wonder that side wasn't working. Even though the factory grilles are missing they still look nice and sound good.
I also took this opportunity to replace the door window molding and clean the door locks, window regulators, etc. The windows go up/down like butter now.
Let me know if anyone wants pics with the pioneer grilles on and I will get ya some.