Would it make that much difference? That "bushing" is made out of the same material as the alternator, haha.

I need to wire the red wire to an electronic device in the car that would see voltage drop. The red wire or S on the pigtail, is a wire that will either make the alternator work harder, or less, depending on the voltage at a certain area. Most people route it to the BAT terminal on the alternator, but that will just show 14.7v all the time, but you will get voltage drops in other places in the system

I'm trying to find a place that would see voltage drops. One guy wired it to his distribution block, what the hell is that?