mattg
Member
Finding good information on this has been a huge pain.
My battery light isn't coming on when I switch the key to run before starting, or when the engine is running (and the alternator is NOT putting out voltage, since it never puts out voltage).
Alternator is "Fresh", probably rebuilt, alternator from the parts store a few days ago. I put that in because I didn't have 12V at the + post on the alternator itself. It didn't help.
Here's what I've checked
Battery voltage (after charging with external charger) 12.8V
Battery voltage after starting, lower and will continue to drain as the car runs.
Checked resistance from alternator (power) cable to battery fuse block. Good.
Fuse block on top of battery is in perfect condition.
Cleaned both grounds under battery tray. They're both good, I get 0 Ohms between the - terminal and either ground. 0.2 - 0.3 ohms to the block and alternator case.
Checked power at the connector above the starter and at the alternator. Orange (not sure about the stripe) has voltage. It was 11.7v last night but the battery was also a little drained at the time.
Checked for chafed wires, grounds, etc in the harness below the battery box.
My questions are;
How do I test the battery light on the dash?
I tried to jump the 2 wires at the alternator and at the connector above the starter, nothing.
Tried grounding either wire, nothing.
Tried +12 to the non-electrified wire. Nothing.
Should both of those wires read +12v to ground? This post says I should
I put +12v to the alternator connector and still didn't get 14V at the battery.
I'm stumped.
Does anyone have a diagram that explains the battery light wiring?
Of the 2 wires in the small connector on the alternator, the +12v wire comes from where? (I assume mine is fine because I have +12v)
Where does the other wire go?
This post has me thinking I should put +12V to the wire that doesn't have voltage. I have +12V on the orange/brown wire (closer to the engine block I think)
Just finished reading this whole thread. I'm thinking my issue with the blue wire. It tests good to the harness above the starter. I have no idea where to test after that as it goes into the car.
What else am I missing here?
My battery light isn't coming on when I switch the key to run before starting, or when the engine is running (and the alternator is NOT putting out voltage, since it never puts out voltage).
Alternator is "Fresh", probably rebuilt, alternator from the parts store a few days ago. I put that in because I didn't have 12V at the + post on the alternator itself. It didn't help.
Here's what I've checked
Battery voltage (after charging with external charger) 12.8V
Battery voltage after starting, lower and will continue to drain as the car runs.
Checked resistance from alternator (power) cable to battery fuse block. Good.
Fuse block on top of battery is in perfect condition.
Cleaned both grounds under battery tray. They're both good, I get 0 Ohms between the - terminal and either ground. 0.2 - 0.3 ohms to the block and alternator case.
Checked power at the connector above the starter and at the alternator. Orange (not sure about the stripe) has voltage. It was 11.7v last night but the battery was also a little drained at the time.
Checked for chafed wires, grounds, etc in the harness below the battery box.
My questions are;
How do I test the battery light on the dash?
I tried to jump the 2 wires at the alternator and at the connector above the starter, nothing.
Tried grounding either wire, nothing.
Tried +12 to the non-electrified wire. Nothing.
Should both of those wires read +12v to ground? This post says I should
I put +12v to the alternator connector and still didn't get 14V at the battery.
I'm stumped.
Does anyone have a diagram that explains the battery light wiring?
Of the 2 wires in the small connector on the alternator, the +12v wire comes from where? (I assume mine is fine because I have +12v)
Where does the other wire go?
This post has me thinking I should put +12V to the wire that doesn't have voltage. I have +12V on the orange/brown wire (closer to the engine block I think)
Just finished reading this whole thread. I'm thinking my issue with the blue wire. It tests good to the harness above the starter. I have no idea where to test after that as it goes into the car.
What else am I missing here?
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