1 more alternator question
03-03-2013, 11:00 PM
#1
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1 more alternator question Ok guy i have this (05 or older 5.3 tahoe) alternator...
The silverado harness only had one wire going to this plug....
When i add 12 volts here the alternator charges but when i shut the car off it only drains the battery.
So do i only need 12 volts switched power going to this or do i need a resistor or light in line with the 12 volts?
Thanks
The silverado harness only had one wire going to this plug....
When i add 12 volts here the alternator charges but when i shut the car off it only drains the battery.
So do i only need 12 volts switched power going to this or do i need a resistor or light in line with the 12 volts?
Thanks
03-04-2013, 10:27 AM
#4
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Idk why but with all the issues everyone (including me) has had with wiring up a alternator someone doesn't just come out with a kit. I even broke down and internally wired a old external voltage regulator to it and called it done. Figured that was better than nothing atall and its proven.
03-04-2013, 08:57 PM
#5
https://ls1tech.com/forums/conversio...or-wiring.html
Heres some reading for you. Pretty sure you need to put a resistor in line to reduce the voltage input from 12v to 5 volts.
Heres some reading for you. Pretty sure you need to put a resistor in line to reduce the voltage input from 12v to 5 volts.
03-06-2013, 07:19 PM
#7
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12v switched goes there with a 470 ohm 1/2 watt resistor in line. Pm me your address and I will send you a resistor in the mail. If you run around without 12v to that one little exciter french tickler plug your alt won't charge anything, and you will run the motor off the batt causing low voltage to the 6010. That WILL fry the MSD fast. How do I know this? Hmmmmm....
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03-06-2013, 08:34 PM
#8
C & P :
one wire from the back of the alternator to the battery like you would normally think. then on the pigtail connector that goes to the top of the alternator there is a single wire. this single wire need a switched 5v signal. you can do this by getting a 12v switched signal from the ignition switch or wherever and solder in a resistor. i used a 470ohm resistor to accomplish this.
the alternator grounds through the case of the alternator, so no need for a ground wire, other than making sure you have a good solid ground from the engine to the chassis.
*disclaimer* if you do not drop the voltage and put a straight 12v signal to that wire on the top of the alternator, you WILL fry the regulator
one wire from the back of the alternator to the battery like you would normally think. then on the pigtail connector that goes to the top of the alternator there is a single wire. this single wire need a switched 5v signal. you can do this by getting a 12v switched signal from the ignition switch or wherever and solder in a resistor. i used a 470ohm resistor to accomplish this.
the alternator grounds through the case of the alternator, so no need for a ground wire, other than making sure you have a good solid ground from the engine to the chassis.
*disclaimer* if you do not drop the voltage and put a straight 12v signal to that wire on the top of the alternator, you WILL fry the regulator
03-07-2013, 10:45 AM
#9
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C & P :
one wire from the back of the alternator to the battery like you would normally think. then on the pigtail connector that goes to the top of the alternator there is a single wire. this single wire need a switched 5v signal. you can do this by getting a 12v switched signal from the ignition switch or wherever and solder in a resistor. i used a 470ohm resistor to accomplish this.
the alternator grounds through the case of the alternator, so no need for a ground wire, other than making sure you have a good solid ground from the engine to the chassis.
*disclaimer* if you do not drop the voltage and put a straight 12v signal to that wire on the top of the alternator, you WILL fry the regulator
one wire from the back of the alternator to the battery like you would normally think. then on the pigtail connector that goes to the top of the alternator there is a single wire. this single wire need a switched 5v signal. you can do this by getting a 12v switched signal from the ignition switch or wherever and solder in a resistor. i used a 470ohm resistor to accomplish this.
the alternator grounds through the case of the alternator, so no need for a ground wire, other than making sure you have a good solid ground from the engine to the chassis.
*disclaimer* if you do not drop the voltage and put a straight 12v signal to that wire on the top of the alternator, you WILL fry the regulator
03-08-2013, 07:34 PM
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Hey so Blue Knight I have a couple pics to help you out here. Really simple, first here look at the plug and resistor soldered in with the white heat shrink over it:
The bag of resistors is there in the pic.470 ohm 1/2 watt.
Wire the exciter plug with the resistor in line to a 12v switched ignition source like this.
Then cover the exciter and the standard feed wire to the battery with some heat shield material.
Chive on.
The bag of resistors is there in the pic.470 ohm 1/2 watt.
Wire the exciter plug with the resistor in line to a 12v switched ignition source like this.
Then cover the exciter and the standard feed wire to the battery with some heat shield material.
Chive on.
Last edited by likes cars; 03-08-2013 at 07:50 PM.
03-09-2013, 06:37 AM
#12
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Thanks for the pictures.
My brain was fried from looking at every alternator post ever made on the internet. 2 wires 3 wires no wires...
Going to pick up a new plug today I will post the p/n then this thread would be sticky material picts and all.
My brain was fried from looking at every alternator post ever made on the internet. 2 wires 3 wires no wires...
Going to pick up a new plug today I will post the p/n then this thread would be sticky material picts and all.
03-11-2013, 12:34 PM
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Ok so I wired in the resistor and it didnt charge. So i checked its ohm and it was 388 .
So i checked a new one at it was 456.
Radio pn 271-1133
I probally fried the 1st one soldering it so i did it again this one is reading 393 after soldering. Am i messing something up?
So i checked a new one at it was 456.
Radio pn 271-1133
I probally fried the 1st one soldering it so i did it again this one is reading 393 after soldering. Am i messing something up?
