1988 is a MKIII, not MKII. The foglight housing for the '88 has a phillips screw on the inside edge of the chrome trim which is accessible from the front of the car (no digging around under or behind the fixture. Remove the screw, the trim will then hinge out and pull off. then you can slide out the glass and metal lamp housing. Pull the rubber boot off the back and the rest should be obvious. When replacing the bulb DO NOT TOUCH THE GLASS of the new bulb.
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