Coonass-V

So my alt is not charging. Took it off & had it tested @ the local parts store, It checked out good so i had them check it again to make sure & it checked out good again. I put it bk on the car & it still was not working. After lookin on the Internet i found out that the orange wire that plugs into the alt should have 12 V on it, it didn't. I made a jumper wire to the batt & it started charging. Can anyone help me out with a wiring diagram of where this wire gets its voltage from & is it a fusable link?

1BADCTS

iTrader: (17)

Yes, follow the positive battery lead down to the starter, and coming off the starter I believe there is a fusible link between the starter and alternator.

ls1247

iTrader: (2)

The wires coming off the alternator are prone to issues. Kind of a tight fit and its my opinion that bad motor mounts will allow the motor to move enough to pull on the wiring there.

Coonass-V

Ok i will check that. Just to make sure that we are talking about the same wire, I am referring to the plastic plug with the two wires that plugs into the alt not the main wire that attaches to the wire lug on the back of the alt.

ls1247

iTrader: (2)

Yes, right there at that plug-in connector is where the problem is from what I've read.

1BADCTS

iTrader: (17)

No, I'm referring to the high current wire running from the starter to the alternator which I believe has an in line fusible link.

You are probably referring to the connector referenced here.

ls1247

iTrader: (2)

Does the v1 even have a fusible link, can't say as I saw one.

Sssnake

The LS2 V1 does have a fusible link behind the driver's side exhaust manifold. You should check this wire and the wires in the connector. Pin B - orange wire is the "turn on" and C - gray wire is the "duty cycle". Pin B should be high 12V or more and PIN C is a varying voltage. I believe this is common on the LS1 and LS2 but know it is correct for the LS2 (rewired the alt this weekend - Big Three).

Coonass-V

Yes that is correct. Pin-B Should have 12V But it doesn't. I need to figure out where the orange wire gets its power from?