James: Our A/C cars have three-speed blower switches with a resistor on the firewall. Best this ME can tell is that the third speed is developed by combining the total amps from the LOW and MEDIUM speeds and without the underhood resistor in the circuit. See Fig. 2, Page 24-4 in the FSM for more detail of the wiring. Wires C4 + C5 without the resistor to get max current. The artist cleverly left out details of the internals of the “AIR CONDITIONER BLOWER SWITCH”, but I experimented to understand it with the switch out of the car. Regards the switch: All the way in is lOW. OFF is set by the vacuum button “OFF” being pressed in to cut off all juice to the fan. Fan switch out one notch—MEDIUM speed. Full out-HIGH. There are no resistors in the fan switch. Rich B. Brentwood From: 'James Douglas' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> My switch seems to be a THREE SPEED switch, yet the wiring diagrams and the owner’s manual just seems to show a low and a high. Can anyone provide any clarity on this? Reason I ask is I am wondering if the resistors to change the fan speed are in the switch (I did not notice them), external someplace, or built into the motor. I am looking into having a permanent magnet motor built to get more RPM and air through the system. But first I need to get a firm grip on how the existing system works. Thanks, James -- For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang --- You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group. To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx. To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/012501da911f%244096cf90%24c1c46eb0%24%40ez2.net. |
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