# Wiring problems

**URL:** <https://forums.speedlife.net/t/wiring-problems/86906>\
**Category:** SON240sx Automotive\
**Created:** [July 2, 2005, 11:51pm UTC](https://forums.speedlife.net/t/wiring-problems/86906 "2005-07-02T23:51:12Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![alesserfate](https://avatars.discourse-cdn.com/v4/letter/a/f6c823/32.png) [@alesserfate](https://forums.speedlife.net/u/alesserfate)\
**Post date:** [July 2, 2005, 11:51pm UTC](https://forums.speedlife.net/t/wiring-problems/86906/1 "2005-07-02T23:51:12Z")

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hey guys im screwing around with my wiring and I’ve ran into the following problems

1. what order does the rpm signal go from tranny - cluster - ecu ? when it goes from tranny, does it go to cluster first, than ecu, or vice versa ?

2. where is the gear position selector, does the ecu even know which gear its in ? im sure it does

3. does anyone have the wiring diagram for these, I cant seem to find them in the FSM, im trying to locate the signal wires

let me know, thanks.

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**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\
**Post date:** [July 3, 2005, 11:54pm UTC](https://forums.speedlife.net/t/wiring-problems/86906/2 "2005-07-03T23:54:54Z")

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1. it goes everywhere at the same time.
2. there are three of them on the tranny and are totally useless
3. yes it’s in the fsm, look harder.

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**Author:** ![AnDrEw](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@AnDrEw](https://forums.speedlife.net/u/AnDrEw)\
**Post date:** [July 4, 2005, 9:53am UTC](https://forums.speedlife.net/t/wiring-problems/86906/3 "2005-07-04T09:53:31Z")

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rpm signal does not come from the tranny. It comes from the ignition coil.  
Go to ignition coil Diagnostic page in FSM and trace the wiring back to cluster/ecu. It splits off to both from a single wire.

Andrew.

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**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\
**Post date:** [July 4, 2005, 12:32pm UTC](https://forums.speedlife.net/t/wiring-problems/86906/4 "2005-07-04T12:32:41Z")

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It’s a yellow/red wire

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**Author:** ![AnDrEw](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@AnDrEw](https://forums.speedlife.net/u/AnDrEw)\
**Post date:** [July 4, 2005, 1:59pm UTC](https://forums.speedlife.net/t/wiring-problems/86906/5 "2005-07-04T13:59:08Z")

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> [@SHIFT\_KA24DET](#):
>
> It’s a yellow/red wire

I believe you are right Jantos

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**Author:** ![alesserfate](https://avatars.discourse-cdn.com/v4/letter/a/f6c823/32.png) [@alesserfate](https://forums.speedlife.net/u/alesserfate)\
**Post date:** [July 4, 2005, 3:34pm UTC](https://forums.speedlife.net/t/wiring-problems/86906/6 "2005-07-04T15:34:32Z")

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which FSM do you guys have ?