I need some help i have a 72 gmc 2500 and i was hoping someone would beable to tell me where the wire that comes off of the blower motor goes i know it goes to the fuse box but where at i have been told that it hooks in with the lighter and i was also told that it goes with the radio so any help with this problem would be great if not maybe you can tell me where i should hook it in to thanks for all your help in advance