Search results

Voltage regulation is taken care of by the alternator. Depending on what type of loads we're talking about, there are a couple different ways to balance them and have 12V out of them. Easiest way is a battery balancer plus a 24/12V converter. Examples below Balancer. This one places a...

The N3118 is for the 400 amp alternator, not the 200 amp, so no, you can't use it on the 200. The 200 amp is considered the go to for the HMMWV. The 400 amp is only used for high power applications, like radio shelter carrier trucks or SECM trucks with things like electrical air compressor...

Either alternator or regulator is bad. If you understand how to use a multimeter, go through the tests in the PDF I linked in my last post. That will confirm for you which item is the failed one. As I said before though, it's usually the regulator, but not always, so if you aren't familiar...

The manufacturer has a really good troubleshooting guide that will take you step through step to determine where the failure is at. 95% of the time it's the regulator. https://www.ceniehoff.com/Documents/Ctrl_Hyperlink/TG17_uid252021123202.pdf

Okay, time for a couple more questions. Did the charging system on this truck ever work, or did you just recently acquire it and trying to sort everything out? I'm asking because something here doesn't look right. The N1225-1 alternator has an external voltage regulator bolted to the outside...

I don't recall seeing it mentioned, what alternator is in your truck? Knowing this will help us to be able to provide more specific troubleshooting, as a few things are different between the different types Use a multimeter to check voltage at the batteries. Then use the meter again at the...

This to me sounds like there is some sort of wiring issue, as there is no way that just the forward battery should go dead if the starter is an issue. Either something is wired incorrectly, or maybe you have a failed 12V relay or diode or something else related to the TCM that is allowing power...