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Old 03-07-2006, 01:16 AM   #1
Schimke
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Join Date: Jan 2006
Location: Seattle area
Default Integrating cruise control '04 STi/Vanagon

I need some suggestions on the best way to integrate the cruise control from a '04 STi into my Vanagon. I'm in the beginning stages of building the wiring harness for the conversion and would like your suggestions as what would be the best cruise control swithces to use.

I'm not very familiar Subarus. I know that I will need to adapt the cruise control stalk to fit the Vanagon, but which Subarus came with the stalk (versus integrated into the steering wheel) and of those which (if any) would be easiest to adapt to the '04 STi ECU?

For that matter, I don't really even know what the '04 STi controls look like. Is it all one switch? could it be moved to a seperate box or dash mounted? Pictures would be cool.

Any ideas would be helpfull. Thanks!
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Old 03-07-2006, 03:04 AM   #2
02Toyowrx
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The oem controls are as following.. a "on swith" which is on the dash this turns the system on and is ready.
another switch is mounted on the steering wheel so you can turn the cruise control on and adjust speed up or down or resume to previous cruise speed.
I would suggest getting a factory harness to work with, if this is not possible get the manual for the STI and trace the wiring diagrams.

good luck.
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Old 03-07-2006, 08:39 PM   #3
Schimke
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Default

Ah, that make sense now. Thanks.

So did any of the Subaru's come with an "all-in-one" cruise control unit that could be adapted? My only concern with using a STi unit is that no one seems to want to seperate the control unit from the steering wheel and you all know what the STi steering wheels sell for. If I could find a damaged steering wheel..............Hmmmm.

I do have the entire harness to work with, but I still have no idea if a different year cruise control stalk would "talk" to the ECU properly.
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Old 07-14-2006, 01:03 PM   #4
subenick
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1999 impreza 2.5RS
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arent 04 STi's DBW... in which case the cruise control is integrated into the system since the throttle body is servo actuated. In which case I believe you need to the oem ECU for the engine (which you will probably have) and the steering wheel for the controls.
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Old 07-14-2006, 01:23 PM   #5
yebokmj
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The STI cruise control is all ECU based because of the DBW. If you are using the STi ecu you can use what ever controls you want including buttons from radio shack. You just need to make sure they send the ecu the proper signals. The ecu wiring diagrams state what signal it's looking for, and the specific wires for cruise control. http://www.northursalia.com/modifica...ng/wiring.html go here and you will find the wiring diagrams for the sti, its further down the page.
Joshua
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Old 07-14-2006, 03:24 PM   #6
UTCiv
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Yep, it's pretty easy once you compare the systems, but matching them up can be confusing if you don't go straight to the ECU Pinout. They all have basically 4 circuits 6 features. None are variable voltage signals.

1-12V Res/Accel
1-12V Set/Decel

12V to both = cancel

1-12V arm cruise
1-12V Loop for Clutch/Brake Deactivate

I am using my 98 Leg controls for the STi cruise, works like a charm. I really like Subaru's all in one "tab".
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