High Charging Rate. Found Voltage Drop Need Guidance Please

Mattax said
I still suggest you schetch/modify a diagram of your car's wiring.
It sounds like there are now 3 paths to the junction at the ballast connector (j2 R5 E1)

If there is still a drop, then need to figure out what they have in common, or disconnect each to isolate the problem.
Then you can hunt voltage drops within the circuit that's carrying the current.
While doing so you might just spot it visually.
That's not a bad thing. View attachment 1715381407

Your sketch pretty much nailed it. The only change was the addition of E1 (ECU) and RL1 replacing J2 at the ballast. J2 now just triggers the Relay. Anyway duty called (wife). I did bench check the ballast and it measured .8 Ohms. I'll get back to it tomorrow. Thanks much.