If you are having trouble installing the window regulator on your Fox Body Mustang please follow these steps to making the install as easy as possible. This is a preassembled unit so that means everything is included for the install. Also, the video is based on the vehicle being a hardtop so if you are replacing on a convertible the only difference is you will have to drill out additional rivets that retain the door support plate. Lastly when using the rivets for the door regulator, we didn’t use the ones that came with the assembly but used the rivet kit that we sell separately as part# LRS-63232-HDW because they are a little better quality. Note: We also recommend that you have above average mechanical ability for this install because of the degree of difficult. If you do not, please find a reputable mechanic shop to perform this install for you. 1. With Fox body’s depending on the year model, there is a minor difference in the regulator. So, you will need to measure the distance between the frontward rivet mounting locations and the small support tab. 1 regulator will have a distance of 2” and the other 2 7/16”. This will be the only difference in the regulator assembly. 2. We also recommend to remove the door panel and measure the center to center distance between the frontward rivets. This will provide the information you need for your exact year model. 3. It is also a good idea to replace the window guide bushings and run channel. These wear out over time and will be easy to access during this install. 4. Now starting with the removal of the door panel, which is very simple on fox body’s, you will now roll back the moisture barrier, if it is still there, to expose the window motor. 5. If your door is equipped with a door speaker, you will need to loosen the retaining hardware and disconnect the electrical connection and set aside. 6. Dislodge the harness clip and disconnect the power mirror electrical connection if equipped. 7. Remove the upper 7/16 nut securing the guide rod to the door frame, then remove the lower 7/16 nut underneath the door frame. 8. Reconnect the window switch and lower the door glass. Ensure that the glass doesn’t bottom out on the rubber bumper stop. If it does bottom out then it needs to be brought up a small amount. 9. Wedge something that won’t cause damage in between the door frame and door glass. Pry the door frame from the glass and carefully remove the guide rod. 10. Locate the (2) 7/16 bolts that retain the metal window run channel bracket to the door frame and remove both. 11. Behind the window regulator, pry the rubber weather-strip out of the bracket and position the bracket away from the regulator. 12. Bring the door glass up until the regulator arm is as close to parallel to the door frame. 13. Support the glass with glass window holders or use a friend to hold in place while you remove the regulator. 14. Carefully drill out all 4 of the rivets with a 3/16 drill bit and there will be a small metal tab at the front of the regulator. This will need to be removed from the door frame. 15. Now you can bring the regulator toward the rear of the door so the arm roller can be removed from the guide then you can remove the existing window regulator from the door. Use this time to vacuum any debris in the door frame.
17. Once the cleaning is done, pop in the new guide bushings and apply fresh grease to the arm roller guide and inside of the bushings.
18. Before the new regulator is installed, apply grease to the arm roller bushing and bring the window all the way up so that you have room to install the new regulator.
19. Carefully position the new regulator into the door and slide the arm roller into the arm roller guide.
20. Bring the regulator all the way forward and position the tab into the door frame which will hold the regulator in place.
21. Plug in the new window motor and remove the door glass support if used. Ensure that the new regulator and motor work correctly.
22. Before you install the 4 rivets, make sure the run channel bracket isn’t pinched or in a bind with the new regulator.
23. Align the mounting holes and the regulator bracket with the holes in the door frame and install the new rivets.
24. Feed the wire from the new motor through the same spot as the factory wire then roll the window down just before the bump stop makes contact with the door frame.
25. Wipe away any old grease from the guide rod and clean with brake clean, then inspect the rod and lightly scuff the surface. Wipe a 2nd time with brake clean then apply fresh grease.
26. Carefully pry open the door frame and reposition the guide rod and ensure that it passes through both guide bushings and both studs pass through their respective locations in the door frame. Reinstall both nuts and try to realign the washers on these nuts with the existing door frame marks.
27. Roll the window all the way up to expose the run channel bracket and reposition this bracket and reinstall the run channel weather-strip into the bracket.
28. Reinstall the upper and lower bolts and loosely tighten. Again, try to realign the bolts with the existing marks on the door frame.
29. Reconnect the window motor and power mirror electrical connection for the final time.
30. Before the door panel is installed roll the window up and down several times to make sure the glass doesn’t come in contact with any component inside the door.
31. Once this is good to go reinstall the door speaker, door panel, and the rest of the interior components located on the door.
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