Quote Originally Posted by Corkey View Post
It shouldn't be any; they run in parallel together.

At the cable just before the battery clamp, I was getting 12.1V; at the clamp, I was getting an accurate low voltage.

Physically, I couldn't see any corrosion.

I used sandpaper and a terminal post cleaner and got the expected voltage, hooked the charger up, and it took the flash.
Interesting, I know before I put the charger on, I wasn't getting 14v, but with it on, the gauge on the dash and my scan tool said 14v.