Where are you pulling the hot to run the fuel pump? Straight From the battery or jumped from somewhere else?


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Well I asked for a one wire but it does have the two prongs on the underneath side of the alternator and they just gave me a little rubber plug to cover it and said I didn't need to use those and I have the one wire from the alternator to the hot side of my battery

As stated above, voltage should be right about 14 with the engine running.

Depending on your pulley setup it may take a few RPM to get the voltage up.  Try revving the engine to 2k and see if there's still no change. 

If it's still 12ish at 2k then get the alternator tested.  While testing make note if the guy hooks up the Field wire to excite the alternator.  Once you've ruled out the new alternator being DOA you can proceed with wiring.

Wait a minute I got one more question with the hot side of the prong to the hot that exit off of it to the battery it charges do you have to run the other wire  to resistor I don't have any kind of resistors in my boat so I just sent it to the power side that goes to the ignition and it works but I don't know if I'm going to burn s*** up that way or what

What do you mean switched 12 volt signal where does it need to go though because if I hook it up to anywhere that's getting power in it reads even if you unplug it it still reads at 14

Ok ty