[ChevyGuy]

I believe it goes to the BCM (or maybe it's the ECM). That direct connection helps the BCM measure the actual battery voltage rather than the voltage on the other end of the distribution system. It needs that for the battery saver feature as well as to control the alternator.

There's not much current.

 

[pmblevins95]

I believe it goes to the BCM (or maybe it's the ECM). That direct connection helps the BCM measure the actual battery voltage rather than the voltage on the other end of the distribution system. It needs that for the battery saver feature as well as to control the alternator.

There's not much current.

Thanks man I appreciate good to know. Out of curiosity then what's the difference been that and the ring that detects the current? Does anyone have a post on how the whole battery system works in the Cruze?

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[Ray Morley]

So if that smaller wire has a break in it or a bad connection to the BCM will this cause the Voltage Regulator to command a lower voltage from the Alternator for system protection? From what I gather from the above comments it appears this smaller wire is very important with regards to the RVC system and will affect the Alternator output and Battery charging quite a bit.