My rear defroster is having trouble keeping up when it's 20 degrees or lower like it is today. It heats up, but does not really melt the snow and ice. Would replacing the relay provide more heat, and if so where is the relay located?
Thanks.

__________________
1987 300D 146K Original #14 Head
One eye on the road, the other on the temp. gauge

Gone But Not Forgotten
1983 380 SEL Long gone
1983 300SD Wish I hadn't traded it in on a 90' Corvette
1989 300SE My all time favorite
1995 E420 Went like a bullet