on my 85 300SD, the high beam comes on intermittently when i press the windshield washer switch. I need to remove and repair the turn signal switch assembly but can't figure out how to remove the cover over the steering column. Any suggestions?

__________________
1983 M-B 300D, 148K, daughter's ride
1983 M-B 300TD, 120K, my ride
1985 M-B 300SD, 102K, wife's ride
1969 HD FLH, 45K, restored/hobby
1996 Chev Suburban, family taxi/tow vehicle
1990 John Deere Model 240
1942 John Deere Model LA
1985 16' 4Winns ski boat