electrical headache alternator
#1
01-03-07, 07:31 PM
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electrical headache alternator
have brand new alt on 1985 pontiac parisienne,. light on dash stays on. please help me locate my problem.
Last edited by boneyj; 01-03-07 at 10:00 PM.
#2
01-03-07, 07:45 PM
Test light time..........There should be 12 volts at the big wire in the back 12 V at the red wire in the side plug..........and 12 V WITH THE KEY ON at the brown wire..........Missing any of that???? If so, you have a wire chase........If not you have a non functioning alt
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01-03-07, 08:02 PM
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oh shoot!!
Originally Posted by wrench47
Test light time..........There should be 12 volts at the big wire in the back 12 V at the red wire in the side plug..........and 12 V WITH THE KEY ON at the brown wire..........Missing any of that???? If so, you have a wire chase........If not you have a non functioning alt
thank you i was afraid of that ,. also could a big stereo amp cause this problem?
#4
01-03-07, 08:22 PM
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You stereo amp is probably draining your battery faster then the alt can charge it. Think about upgrading alt, adding a amp capacitor, or upgrading to a yellowtop battery.
To test this, disconnect your amp power cable from battery, and drive around for awhile and see if the light comes on, if it does, you have a wiring problem, or the alternator and/or battery is bad.
To test this, disconnect your amp power cable from battery, and drive around for awhile and see if the light comes on, if it does, you have a wiring problem, or the alternator and/or battery is bad.
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01-03-07, 08:24 PM
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#7
01-03-07, 08:27 PM
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1985 huh......
If I remember correctly, the thin brown wire at the alt. also feeds the electric Choke? There may be a "Choke " relay under the dash. It Looks like a Horn relay , but it will be Green in color. A wiring diagram is the hot ticket here.
If I remember correctly, the thin brown wire at the alt. also feeds the electric Choke? There may be a "Choke " relay under the dash. It Looks like a Horn relay , but it will be Green in color. A wiring diagram is the hot ticket here.
gotta be bigger & better
