68 Barracuda Alternator upgrade.

CB340 said

Thank you,
I did buy the service manual for this vehicle. I am new at this, exceptionally mechanically inclined, but again new to this much detail. I was hoping that there was a known shunt that would suffice but the more I dig in, the more I know I know nothing! The education I receive for all is greatly appreciated!
It sounds like that there's no quick fix to this question. That's OK, I will learn as I go along.
I was hoping that there was a way to address this common issue by purchasing a manufactured shunt to resolve the problem.
Thanks for your help.

Click to expand...

You would need to find someone who has the equipment to measure the original shunts. Over on moparts there was a guy who offered to do that if you sent him the shunt. Do a search there for external shunt. Nacho was looking into this question.
It still comes back to what you want to measure. If you have over 40 amps going to the battery, there is going to be a problem. An externally shunted ammeter will tell you that, if properly placed. A voltmeter won't. What meters you use all depends on what information you are looking for. Your initial post mentioned many electrical load additions. Some that might run on battery (that is when engine is off). Factory system isn't designed for that. You might want to design a system with an auxilery distribution box and maybe a way to protect the battery from high rates of charging.