Alternator hookup VP Gxi-g

highpowerdad

Petty Officer 2nd Class
Joined
Feb 5, 2020
Messages
111
Hi all, want to make sure I am not missing something with an alternator hookup on a 2006 Volvo Penta 5.7 Gxi-g. This is a pulled motor, not in a boat, the orange wire (heavy gauge) that is part of the main harness is cut at the alternator but is attached at the starter, and the is continuity. Actually attached to the alternator is a red wire (heavy gauge) that is also cut about 2 ft long. I assume, before the motor was pulled from the donor, these were connected together with a third wire that went to batteries or something, that is my guess anyway . Just want to make sure that I am not missing something with why the harness wire would be cut that is particular to VP motor… ie bypass of something in the main harness. I will post a picture when I can get better reception.
Thanks
Scott
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
43,635
This is a pulled motor
Many times if the orange wire will be disconnected from ALT if it's going to a isolator, auto charge relay or Battery switch connecting different Bats.

Connecting it to a Bat switch would be worst case

If your installing the motor in standard fashion, re-connect the orange wire and get rid of the red one hanging. Then install as normal
 

highpowerdad

Petty Officer 2nd Class
Joined
Feb 5, 2020
Messages
111
If your installing the motor in standard fashion, re-connect the orange wire and get rid of the red one hanging. Then install as normal
Any thoughts on if having run it without the positive wire connected may have damaged the alternator electronics... exciter and ground was hooked up, just not the positive charging (heavy) wire. I would think with no load, it is just free spinning, but with all these newer electronics, I don't want to chance hooking it up and then bricking an ECM when I start the motor up due to a bad voltage regulator or something like that.
 
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