Ka24de alternator charge light help

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npa4863
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Ka24de alternator charge light help

Post by npa4863 »

On the s14 ka24de (obd2) the charge light needs to be hooked up for the alternator to produce the correct voltage. After some research i found that theres a resistor in the cluster parallel with the charge light. Can some one ohm the charge lamp circuit in the cluster? Or if you know the correct resistor to delete the light?


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R34SR
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Re: Ka24de alternator charge light help

Post by R34SR »

Years later, I'm in this same boat and I need the answer to this...
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TinyT wrote:for the love of god, post your setup, do you really think you can get an answer after saying HI ME CAR HAS TURBO NOW BUT I CANT BWAAA PSHH WITH IT WHATS WRONG
modulation
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Re: Ka24de alternator charge light help

Post by modulation »

modulation
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Re: Ka24de alternator charge light help

Post by modulation »

I'd try like a 470ohm 1/2 watt resistor. Measure the voltage while charging and go with more ohms if voltage is too high.
modulation
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Re: Ka24de alternator charge light help

Post by modulation »

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R34SR
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Re: Ka24de alternator charge light help

Post by R34SR »

Appreciates, saw the 510 one and figured that's where I'll start.
MEGASQUIRT 2 PNP
AEM IGN1A COILS
EAGLE-ARP-SUPERTECH 9:1 KA24DE
BW S257 SX-E .78AR
ID1050x Injectors
Full Race twin scroll manifold
ISIS FMIC
Mazworx z32 tranny swap
CTS V CALIPERS
STANCE LX+ Coilovers
J30 LSD
AME FS01 WHEELS 18X9 +25



TinyT wrote:for the love of god, post your setup, do you really think you can get an answer after saying HI ME CAR HAS TURBO NOW BUT I CANT BWAAA PSHH WITH IT WHATS WRONG
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p00t
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Re: Ka24de alternator charge light help

Post by p00t »

I had no idea about the resistor in parallel with the bulb. Interesting.

But the alternator finds it's voltage on the sense line that is connected to the battery. The alternator should just be using the bulb for diagnostics. It is possible the resistor plays a part in whether the bulb accurately lights (to prevent a false indication of a problem).

Is your alternator voltage wacky or okay? Have you tried a different alternator?
s14_alt.GIF
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p00t
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Re: Ka24de alternator charge light help

Post by p00t »

So the plot thickens sort of...

I checked out an s13 due to curiosity...

The same thing is happening except instead of a resistor in the cluster it uses the bulb check relay coil. Hmm.

So the current through the bulb/resistor is just enough to turn the circuits on inside the alternator.

100 ohm resistor sounds rights that is close to a relay... or use a relay!?
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s13_alt.GIF
s13_alt.GIF (10.53 KiB) Viewed 113 times
Current Experiment: APS SR56, Methanol Injection, & Built Block
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R34SR
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Re: Ka24de alternator charge light help

Post by R34SR »

Well I wired it up with the charge light to ignition power, and the other line Direct to the alternator + stud...so far all seems well.inram completely new lines since I have aftermarket gauge cluster. Appreciate the insight though, and if it fails again I'll try the resistor.
MEGASQUIRT 2 PNP
AEM IGN1A COILS
EAGLE-ARP-SUPERTECH 9:1 KA24DE
BW S257 SX-E .78AR
ID1050x Injectors
Full Race twin scroll manifold
ISIS FMIC
Mazworx z32 tranny swap
CTS V CALIPERS
STANCE LX+ Coilovers
J30 LSD
AME FS01 WHEELS 18X9 +25



TinyT wrote:for the love of god, post your setup, do you really think you can get an answer after saying HI ME CAR HAS TURBO NOW BUT I CANT BWAAA PSHH WITH IT WHATS WRONG
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