Volvo Alternator Wire Question

[TheGreatEscapeII]

I have a 2005 Volvo 5.0 GXI motor. A few weeks ago I was going over my motor and noticed this wire behind the alternator. Does not appear it was plugged into anything. It has black electrical tape on it and is orange in color. Anybody have a clue what this might be for? Alternator is working fine.

Here are some pictures.

 

[pdecat]

looks like you have a single wire alternator that doesn’t require a sensing wire. Since everything is working ok just make sure it is insulated well.

 

[jeffk]

I have the same thing on mine. Never had a problem

 

[Shadowcruzr]

That is the old alternator to starter wire that on a single battery installation would charge the battery. Since you have a multiple battery set up with a battery isolator, the old wire was disconnected and a new wire installed between the alternator and the isolator.

 

[TheGreatEscapeII]

Thanks for your replies, I do have a battery isolator since the boat has multiple batteries. I just wanted to make sure nothing became disconnected.