How do you change the rear tail light lens on a 1989 Lincoln town car?

I havewan 88. The taillight assembly must be taken off car.. This is what (rear part of the body comes off ) surrounds the lense. If I remember correctly their are 3 or 4 bolts holding the assembly. 2 or 3 Bolts are inside the trunk and one is underneath on the outsideof the vehicle. There may be rubber caps hiding the bolts. When all the bolts are off wiggle the assembly. If it wont move , better to makes sure no more bolts are holding it before excessive pressure used. Once this is taken off, the whole assembly will separate from the vehicle. Then unplug the light. The lense screws out from the inside and is pulled thru. I hope this helps and good luck.