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can a shift light be wired into the ecu?

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Old Jun 26, 2002 | 08:30 AM
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Default can a shift light be wired into the ecu?
i know theres a rpm wire on the ecu, can i wire a shift light into that wire, im sure it would give me a more accurate reading am i right?
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Old Jun 26, 2002 | 08:59 AM
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Default Re: can a shift light be wired into the ecu? (SilverB18C1)
Yup, it can. Apex'i S-AFC and V-AFC tap into that wire.

I almost did it myself, but got nervous about tapping into ECU wires and used the one on the gauge bezel plug.
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Old Jun 26, 2002 | 10:44 AM
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Default Re: can a shift light be wired into the ecu? (StyleTEG)
im using the one on the cluster right no, but its 100rpms off, i would like to tap into the ecu for a more accurate reading, hopefully.
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Old Jun 26, 2002 | 12:40 PM
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Default Re: can a shift light be wired into the ecu? (SilverB18C1)
most people tap into the distributor....but what ever works.
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Old Jun 26, 2002 | 01:05 PM
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Default Re: can a shift light be wired into the ecu? (Cramerox)
im trying not to have any wires running outta the bay, just makes me feel better knowing everything is contained.

so does anyone know what wire it is? color? pin#?
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Old Jun 26, 2002 | 01:59 PM
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Default Re: can a shift light be wired into the ecu? (SilverB18C1)
Check Apex'i website and look for the diring diagrams for the AFC controllers.
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Old Jun 26, 2002 | 02:27 PM
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Default Re: can a shift light be wired into the ecu? (StyleTEG)
the didnt have odbII ecu diagrams
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Old Jun 26, 2002 | 02:31 PM
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Default Re: can a shift light be wired into the ecu? (SilverB18C1)
Really? Thats pretty strange... because they do have ODB II ecu diagrams

http://www.apexi-usa.com/productdocu...afc_update.pdf
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Old Jun 26, 2002 | 02:33 PM
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Default Re: can a shift light be wired into the ecu? (StyleTEG)
heh silly me, i was looking under safc, THANKS, i woudl use WH-3 right? for a 2001 gsr
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Old Jun 26, 2002 | 06:55 PM
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Default Re: can a shift light be wired into the ecu? (SilverB18C1)
OK i did it! the RPM signal wire on a ODBII ECU is the yellow wire with a green stripe on it and silver markings. you can find this wire on the center(middle) connector of the 3
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Old Jun 30, 2002 | 01:08 PM
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Default Re: can a shift light be wired into the ecu? (SilverB18C1)
Do you have a monster tach or just a shift light. I don't want a monster tach.
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Old Jun 30, 2002 | 01:27 PM
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Default Re: can a shift light be wired into the ecu? (speedymon)
just the shift light, but either of the 2 can be wired into that rpm signal wire
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Old Jul 1, 2002 | 07:24 AM
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Default Re: can a shift light be wired into the ecu? (SilverB18C1)
Don't you have to have the trigger box that tell the light when to turn on at a certain rpm
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Old Jul 1, 2002 | 09:30 AM
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Default Re: can a shift light be wired into the ecu? (speedymon)
my hondata shift light is wire to my check engine light which comes on at 8200 rpm
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Old Jul 1, 2002 | 10:00 AM
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Default Re: can a shift light be wired into the ecu? (NXTEG)
my hondata shift light is wire to my check engine light which comes on at 8200 rpm
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Old Jul 1, 2002 | 10:28 AM
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Default Re: can a shift light be wired into the ecu? (Cramerox)
my hondata shift light is wire to my check engine light which comes on at 8200 rpm
To each their own...it's been working for me...I have 2 shift lights, I use the Hondata for first gear due to reaction times, and I use my normal shift light for 2nd gear and up...
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