I recently got an absolute chestnut of a deal! I picked up a 1991 signature black on black on black "has the black Presidential town sedan top". I make the third owner of this rig, the previous owner bought it in 1996 and it's spent the better part of the past 20+ years in his garage only driven on nice days, all I know is this thing is cherry. The reason for the post is this car was optioned with the instaclear windshield and I have verified it to be the proper glass the problem I'm having is when I turn it on, the interior lights dim and within a second or two, it shuts off "the instaclear". I have looked both high and low for resources on how to troubleshoot this thing, but it appears that this option was'nt the hottest ticket and since heated windshields never took off in the US, there isnt a whole lot of info. any guidance would be greatly appreciated!