Well i got my 5.3 with ls6 accessories and 02 vette ecu and wiring harness installed in my 70 Chevelle.

The alt is charging at 14.9. I have the original wire from alt with resistor running directly to the batery. Is there a better way to run it. Or is 14.9 normal. It is the 3 wire connector.

 

14.9 is a little high but its not too bad (13.8-14.2 is ideal). If you have a dry cell battery i doubt there would be any problems. However, if you are using a normal lead/acid battery, the acid could potentially boil over from the excessive heat

 

Yep, thats a little high for my taste. Sounds like you've got a voltage regulator on the fritz.

 

Certainly not an internal engine question, let's stick this here in conversions.

Good luck!

 

Why would you run that wire directly to the battery? It is seeing power all the time. It needs to be going to a switched sours so that it is only getting power when the ignition switch is in the RUN position. You should also wire the S terminal to your main power distribution point.

Andrew

 

So should I just run it back to the starter like it was originally done?

 

Why doesn't your Vette harness have an alternator plug?

Andrew

 

Andrew,
How and where should the alt. charge wire be run? Do they require the resistor wire as the OP mentioned? Or is that not needed? What guage wire should be run from the alt. to the........... starter/ batt.bulkhead or batt. + terminal?

Since you have successfully swapped 2 conversions, what did you do?

thanks,
JIm

 

LMAO.....So yeah....I must have been drunk...For some reason I was thinking that he was talking about the alternator plug....when in reality he was talking about the output wire......Yes, I was being a moron and I admit it!!!

When running the output wire from an alternator I take it to the starter on GM vehicles. On the Cougar it is connected to the hot side of the starter relay. I have never seen or see any reason to have a resistor in that wire.

When the vehicle is running the alternator is serving all the electrical needs of the vehicle. The alternator in my Cougar is 130 amps and I combined 3 10 gauge wires together.

*edit* I just reread the original post and it definitely sounds like he was asking about the alternator plug, not the output wire...So maybe I wasn't drunk...LOL

Maybe the OP will dive back in here and clarify what he is actually asking about....

Andrew

 

I do have the plug. The one terminal comes off and I have that running with the alternator into the battery. I thought the other two were controlled by the computer

 

I am glad this is getting straightened out. I still need to address this in my bros basket case Camaro.

Andrew,
I wasn't being a smart azz I am seriously wanting to know what is considered "acceptable" I want to run it to the battery bulkhead just above the starter.

 

Please be more descriptive in your posts. I see three wires but I have no idea which ones you are referring to with respect to going to the battery or to the ECU...

Andrew

 

I didn't think you were being a smart ***...no worries.

By "Battery bulkhead" do you mean a power distribution block? If so, then that is totally acceptable, since presumably the high load circuits will draw their power from this point.

Andrew

 

Here is the question reworded... So I know the 14.9 is pretty high... Here is how it's installed .. So does it sound like the wiring is in the right place? Post from alt straight to battery... Battery positive voltage wire with fusable link straight to the battery.... Grey pin is the " generator field duty cycle sig" other red in pin is the generator turn on signal" both are controlled by the pcm.

 

http://www.pirate4x4.com/tech/billavista/Wiring/Part2/

Andrew