The reason a 6V relay is used is so it always has full voltage. If you use a 12V relay and the voltage drops below 12V it may not stay energized.
Electric dash panel gages on older cars used a voltage reducer so all the gages would always have steady voltage to give accurate readings should the input voltage fluctuate. Most reduced 12V to 5V.
The coil on 12V gasoline engines is actually a 6V.
I just tried to post a couple of photos of this topic. I clicked on the image icon, did not have a box to go to "Browse" to upload picture from my computor. All I got was [img] on the page. I even read through help. It shows how to in the Pictures of Buses page, but not in the Post reply page.What am I doing wrong? I even tried to copy and paste, that did not work either.Paul
I took the pictures yesterday but they were too big to attach. Tried to resize them using Googles Picaso, could not find how to do that. Then I just ran out of time. I will not be able to get back to it until late this week. A little R and R at Huntington Beach this week with the wife.Thanks for all the help so far gentlemen Bus Nuts.Paul