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Thread: Where is the TD5 Defender ac resistor located?

  1. #1
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    Where is the TD5 Defender ac resistor located?

    Hi Wizard folk

    I failed searching the web for the some guidance on the location of the defender ac resistor

    AC fan speed 1 is gone. I know it has to be somewhere down there on the left, but a not sure what to dismantle.

    Appreciate your insight!

  2. #2
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    TD5 A/C blower resistor pack.

    Seems this is a not uncommon problem, except there is nothing I can find on where the 'resistor pack' is located. Rather like to know before digging into the blower thing.

    This old thread:
    County AC Fan Speed

    Gives a bit of info, also there is a reference to a Jaycar variable speed control. I rather prefer not to replace the switch (have taken that out, it was clean and now even cleaner with protective grease) but fit a resistor if I can find out where the darn thing is.

    Suggestions anyone?

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    Diagrams for all sort of things

    Could not find it here either but lots of nice diagrams for all sort of things:
    Air Conditioning Diagrams - Find Land Rover parts at LR Workshop

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    Blower motor resistor: G105.....speed 1 seems to be a 3 Ohm 20W min. resistor

    Here on page 38.2 it does mention the blower motor resistor:

    ladrover defender td5 wiring diagrams - Google Search

    G105

    Then found this:
    heater resistor UTP1281 | LandyZone - Land Rover Forum

    Quote: “Some basic electrical theory and very rough calculations based on a bit of guess work and your 3.5 ohm reading.
    We will assume that normal operating voltage is 14 v rather than 12 v (as the alternator will be charging the battery)
    Assume that the motor gets say 6v at low speed (could be more or less, just a guess at the moment)
    That means the resistor needs to drop about 8 volts (14 - 6)
    To drop 8 volts over a 3.5 ohm resistor requires a current of 2.3 amps. (8 V divided by 3.5 ohms).
    Heat needed to be dissipated by the resistor will be 18.5 watts (volts x amps = 8 x 2.3) or (current squared x resistance = (2.3 x 2.3) x 3.5).
    In theory anything with a power rating over 20 watts would work in this scenario however you also need a sufficient heat sink area to dissipate that heat efficiently.
    If anyone knows the actual voltage on slow speed you can change the figures above to recalculate the minimum resistor wattage.”

  5. #5
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    Found the A/C blower resistor! (I think)

    I believe I found it. My TD5 Defender is RHD! The A/C blower is in the passenger foot well, and the and if you crawl right down and look from the right side then you can see the resistor thingy with the white connector where no hand can reach it. See the photo.

    So I am still not clear how to get to it. How much of the AC fascia etc do I have to dismantle and do I actually have to have the refrigerant drained for that?

    Image-1.jpg

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