Greetings, I have a 47 Dodge truck that is getting close to seeing the road. Installed a Gran Fury K-frame, 360, 727 and 8.75. My 6 volt wiper motors and blower fan still work, but I need to step each one down from the current truck 12 volt system to 6 volts that used to power them when to old flat head was still in. Does anyone out there have any experience with this? Where did you go to get them? Thanks.