RPM shift light.
Sorry, I missed this until now. It started in '05 with the rev up motor. Pretty sure the z didn't have it until then also.
Joined: Jan 2004
Posts: 21,095
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From: Toronto, GTA north
I just discovered that the ECU has a dedicated RPM output - it's a red wire at pin 110.
This is on a smaller 32 pin plug at the ECU - it would definately be worth giving this signal a shot to drive the shift light!
This is ONLY on the newer ECUs - 07ish up.
This is on a smaller 32 pin plug at the ECU - it would definately be worth giving this signal a shot to drive the shift light!
This is ONLY on the newer ECUs - 07ish up.
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Joined: Sep 2008
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Come on guys, 2 more peeps and we can get the ball rollin'.
BTW Kev, I asked earlier but you probably missed it: Which is more preferrable, to mount the unit near the VDC and extend the wires to the BCM, or vice versa? Is there any disadvantage to either? Thanks
Joined: Jan 2004
Posts: 21,095
Likes: 47
From: Toronto, GTA north
^ under drivers side dash according to install pdf.
http://www.kptechnologies.com/docs/S...stallation.pdf
http://www.kptechnologies.com/docs/S...stallation.pdf
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Joined: Sep 2008
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^ under drivers side dash according to install pdf.
http://www.kptechnologies.com/docs/S...stallation.pdf
http://www.kptechnologies.com/docs/S...stallation.pdf
At least we have a dedicated rpm signal wire now
Joined: Jan 2004
Posts: 21,095
Likes: 47
From: Toronto, GTA north
I think it'd be easier to lengthen the RPM wire if you had too.
More than likely, it's long enough to get to the connection point.
The LED is a twisted pr & would be more of a PITA to splice.
More than likely, it's long enough to get to the connection point.
The LED is a twisted pr & would be more of a PITA to splice.
The LED is pretty long, and the RPM wire is pretty long, so length between the two shouldn't be an issue.
You don't need to actually wire to the BCM, you need the ECU (near the BCM, under the passenger side of the dashboard).
Since most of the wires are at the VDC switch and the RPM wire is long, I would mount the module in close proximatey to the VDC switch. You can grab your program input, ground, and the switched power near the VDC switch, then just mount your LED and run the long RPM wire to the ECU.
You don't need to actually wire to the BCM, you need the ECU (near the BCM, under the passenger side of the dashboard).
Since most of the wires are at the VDC switch and the RPM wire is long, I would mount the module in close proximatey to the VDC switch. You can grab your program input, ground, and the switched power near the VDC switch, then just mount your LED and run the long RPM wire to the ECU.
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Joined: Sep 2008
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That's true too, but I was thinking I'd have to use a slightly larger LED anyway, so I'd have to splice the wires. Then again, the VDC switch is under there, so in essence I'd have to lengthen 3 wires (2 led, 1 VDC) rather than one rpm wire. You're probably right.
BTW, when I used to work car audio, we used to put both wires in the tip of our cordless drill and turn it on to twist them so that's super easy to deal with too.
*Edit*, just saw Kev's post, nm lol
BTW, when I used to work car audio, we used to put both wires in the tip of our cordless drill and turn it on to twist them so that's super easy to deal with too.
*Edit*, just saw Kev's post, nm lol
Joined: Jan 2004
Posts: 21,095
Likes: 47
From: Toronto, GTA north
We do process instrumentation, everything is 4-20ma shielded twisted pair.
I've done the drill routine on occasion though.
All this "tap into the ECU" talk has me dizzy.
This had better come with instructions that a monkey can follow. (Me being that said monkey)
I'm really surprised this isn't showing more interest.
Only three of us have wished for this?
This had better come with instructions that a monkey can follow. (Me being that said monkey)
I'm really surprised this isn't showing more interest.
Only three of us have wished for this?