I am doing a homemade wiring harness for my custom 53 3100. I have studied the posts on the search feature and the tech tips as well. I found wiring diagrams on later model vehicles but there is still one thing I do not understand. How does the brake light circuit integrate into the turn signal switch without causing the power to feed back to the front turn signals as well? Is there an internal diode in the switch to isolate the front? I understand circuits and basic electronics so there is surely a more clear explanation for this. Since one post said there is no diode in older systems how did they do this? Thanks in advance.
