Had some questions about towing mirrors. I'd like to get a set (like the ones on the current NBS) and was wondering if it makes a difference whether or not I have heated mirrors. I don't have heated mirrors with my current ones. I was looking on ebay and most all the telescopic mirrors I saw for sale were power with heat. Is there a specific part number I need? Also, where's the cheapest place to pick some up at?

http://www.dieselplace.com/forum/showthread.php?t=59112

dont know if one plug is for heat and other is for power just a guess
but thats the write up i used and i got mine off ebay