cant get alt to charge over 12 volts. carb ls
06-14-2015, 05:57 PM
#1
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cant get alt to charge over 12 volts. carb ls i got a problem . i cant get my alt or charging system over 12volts when its running. i have a alt with the 4 pin harness and the batt+ on back. i have a switched 12v with 470k ohm resistor to the L terminal. and switched 12v to the F/I terminal. weird thing is when car is off batt reads 12.5.during run its 12 or 11.9.
car is a 71 chevelle. i disconnected the old external regulator and thats it as far as disconnecting old wiring for power supply.
can it be a grounding problem? i have frame and engine block grounded to batt.
thanks for any help in advance. it ll be awesome to get this prob solved.
car is a 71 chevelle. i disconnected the old external regulator and thats it as far as disconnecting old wiring for power supply.
can it be a grounding problem? i have frame and engine block grounded to batt.
thanks for any help in advance. it ll be awesome to get this prob solved.
06-15-2015, 06:55 AM
#2
I dont know what alt you have but all I did on mine was the L terminal to my gen light . The resister does the same thing as the light . I would try and remove the f/I conections and see what happens . If it dont charge then it may be a good idea to take it to the local store and have it tested .
06-16-2015, 04:12 PM
#6
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I think the F/I can be used as a fail safe in case your Gen light bulb goes out or the resister fails.
http://www.pirate4x4.com/tech/billav...art2/#csseries
Andrew
http://www.pirate4x4.com/tech/billav...art2/#csseries
Andrew