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06-15-2011, 12:20 AM | #1 |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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JDM Automatic A/C Conversion Demonstration
JDM AC Controls.jpg
I have been fiddling with the JDM Automatic A/C system for quite some time now, with the intention of developing a plug and play harness for Steve (echo_hrs), who imported a couple of sets of the required hardware. To build the PnP harness, I used the female E8 and E9 connectors from a USDM AC ECU, and a male E11 connector from a JDM wiring harness. I also used an ED1 connector and an E4 connector for the fan wiring from a USDM wiring harness. One piece that I missed, when giving Steve the list of JDM parts needed, was the fan speed control assembly from the JDM Auto AC. The USDM AC uses a blower resistor assembly to adjust the fan speed, whereas the JDM Auto AC uses a solid state speed controller, which responds to a pulsed signal from the AC ECU. Since we didn't import that piece, I had to analyze the signal from the JDM AC ECU and create my own solid state speed control to emulate the JDM one. Here is a video of it in action: http://www.youtube.com/watch?v=qbInNKKEwFc Here is the harness that I created:
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Last edited by CTScott; 06-15-2011 at 11:14 AM. |
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