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*LILRED66* · 05-10-2010, 01:55 AM

I drill them from the inside with a right-angle drill and a short 1/8" drill bit, followed by a Uni-bit from the outside, to the correct diameter...approximately 1/4". The backing plate helps align the Uni-bit from the outside, to the correct hole locations for the mirror mounting arm.

05-10-2010, 01:55 AM	#15
LILRED66 Account Suspended Join Date: May 2005 Location: Kansas City, KS Posts: 3,906	Re: adding passenger side door mirror ? I drill them from the inside with a right-angle drill and a short 1/8" drill bit, followed by a Uni-bit from the outside, to the correct diameter...approximately 1/4". The backing plate helps align the Uni-bit from the outside, to the correct hole locations for the mirror mounting arm.