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Heater Slide Switches

Discussion in '"Stock" Alpine' started by tylerite3124, Feb 17, 2021.

  1. tylerite3124

    tylerite3124 Platinum Level Sponsor

    Are the heater slide switches the same on both sides of the heater control panel? Are they interchangeable? If not, how do you tell the left side from the right? Thanks for any help.

  2. Scotty

    Scotty Platinum Level Sponsor

    I recently picked up a set of the heater slide switches in fantastic condition and one's wire is twice as long as the other. I'm not sure if it varies by series, though. The ones I bought are purported to be for the III-V range and I have yet to swap them out for the old ones. Mine have some rust on them but my system works so it's something that I'm kind of doing at my leisure.

    This might help you out, though: http://sunbeamalpine.org/wp-content/uploads/2017/10/19-Heating-Ventilation-R.pdf
    Last edited: Feb 17, 2021
  3. Mike O'D

    Mike O'D Gold Level Sponsor

    What Series? Early Series - definitely not - right side switch was pull out to turn the fan on.
  4. rixter

    rixter Gold Level Sponsor

    The wire length difference is due to one lever controlling the heat register, which is just under the dash, while the other is controlling the heater valve, which is further out in the engine compartment.

    As Mike says, the older series had one lever on the right with the ability to pull out and push in, to engage/disengage a contact. The black wire is snapped off in this photo below, but you can see how the left lever and right lever are different on the early series.

    I don't have a later series setup apart, but I don't see any reason they would be different from one another as they are both just pulling cables the same amount.


    Scotty likes this.
  5. tylerite3124

    tylerite3124 Platinum Level Sponsor

    Thanks Rick. I appreciate the info & pictures.
  6. Scotty

    Scotty Platinum Level Sponsor

    Here's the ones I got that they say work for the III-V. Rixter, I noticed yours has 'screw-ins' for the tips. My tips are more like pegs, which matches one of the broken plastic tips from my installed ones that goes on it. Wonder why they made that change...

    Attached Files:

  7. sunalp

    sunalp Platinum Level Sponsor

  8. absunbeam

    absunbeam Gold Level Sponsor

    If it’s an early Tiger the slide switch cables come out to the right and are the same angle. On a SV the LH slide switch will angle towards the left, cable to the heater control and the RH slide switch will angle towards the right cable will go to the air control. Just got through going through the same.
  9. absunbeam

    absunbeam Gold Level Sponsor

    Hope these help they are of the SV dash which I haven’t changed and believe to be original.-Al

    Attached Files:

  10. thill35803

    thill35803 Donation Time

    Just to echo what Rixter said above, The one with the switch has a shorter throw and therefore moves the cable less. I tried to use the lever on the left in the photo above to control the air box on my SV. The result was the dash lever would only go through about half its travel when operating the air box. It took a good bit of head scratching to figure this out.
  11. tylerite3124

    tylerite3124 Platinum Level Sponsor

    Thanks for your input Tom.

  12. Knightowl61

    Knightowl61 Gold Level Sponsor

    Early series cables are the same length, left side heater (water valve) & right side air diffuser.
    Series 3 & later the air diffuser cable is much shorter due to difference in air box designs.

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