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Thread: need help finding some switches

  1. #1

    need help finding some switches

    Hey
    I'm installing some power seats in an old benz, I want to make a switch panel for the seats, but I'm not sure what current rating to choose. The smaller the better I guess but I'd like to keep cost reasonable

    I think I need a DPDT (double pole double throw) momentary switch

    I'd like to order something like this:
    5pcs 6 Pin Toggle DPDT ON OFF ON Momentary Switch 15A 250V-in Other Switches from Electrical Equipment & Supplies on Aliexpress.com

    It's going in an 80's Mercedes 300cd so I think this style switch would blend in, but something with a nicer looking lever would be cool

    Any suggestions for a reputable online supplier?

    I need 8 DPDT momentary switches (4 per seat) and 2 matching SPST (single pole single throw) for the seat heaters

    Thanks!
    Eric
    3geez member since October 12, 2000
    "All this worldly wisdom was once the unamiable heresy of some wise man." - Henry David Thoreau



  2. #2
    3Geez Veteran lostforawhile's Avatar
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    Re: need help finding some switches

    You really need relays, to make this work right, ill send. You a basic diagram on how to set up two bosch type relays to reverse current, ill have to do it a bit later though, those mercedes power seats can pull a lot of current, so you really need to use relays

  3. #3
    3Geez Veteran lostforawhile's Avatar
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    Re: need help finding some switches

    You need a switch setup with a single pole double throw, the center pole goes to ground,then you have two seperate ground outputs depending on the direction the switch is pushed, use the same diagram here you would use for door. Lock actuators,except the motor replaces the actuator.

  4. #4

    Re: need help finding some switches

    That will work but it's a little over-complicated,

    This is what I want to do:



    a dual pole dual throw momentary switch, fused of course, x8

    The relay route would require 16 relays
    Last edited by POS carb; 03-20-2013 at 09:26 AM.
    Eric
    3geez member since October 12, 2000
    "All this worldly wisdom was once the unamiable heresy of some wise man." - Henry David Thoreau

  5. #5
    3Geez Veteran lostforawhile's Avatar
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    Re: need help finding some switches

    Quote Originally Posted by POS carb View Post
    That will work but it's a little over-complicated,

    This is what I want to do:



    a dual pole dual throw momentary switch, fused of course, x8

    The relay route would require 16 relays
    it would require 2 five pin bosch relays per motor,which you can get all day at the yard, from working on those old mercedes power seats in the past, they requre a shitload of current, its going to be hard to find a switch capable of handling it, a lot of full size american cars with power seats had a relay setup already mounted on a bracket and wired
    Last edited by lostforawhile; 03-20-2013 at 10:20 AM.

  6. #6

    Dr_Snooz's Avatar
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    Re: need help finding some switches

    In answer to the original question, is it possible to use switches from another Benz?
    Dr_Snooz

    "I like to take hammers, and just break stuff, just break stuff." - Beavis


    1989 Honda Accord LX-i Coupe, 240k miles, MT swap, rear disc swap

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  7. #7
    3Geez Veteran lostforawhile's Avatar
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    Re: need help finding some switches

    almost every power seat setup ive seen has had relays, they often use series wound motors which take a lot of current, even if you used a switch by itself, it's going to shorten it's life considerably

  8. #8

    Re: need help finding some switches

    THIS is what I am looking for!!!



    Maybe something a little more heavy duty, those are rated at 3A@ 120v which I believe might be enough. I'm going to try and do a current draw test on the seat motors to see what I need
    Eric
    3geez member since October 12, 2000
    "All this worldly wisdom was once the unamiable heresy of some wise man." - Henry David Thoreau

  9. #9

    2oodoor's Avatar
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    Re: need help finding some switches

    Those look like air ride switches, Im sure Grainger can get those if all else...

  10. #10
    3Geez Veteran lostforawhile's Avatar
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    Re: need help finding some switches

    Quote Originally Posted by POS carb View Post
    THIS is what I am looking for!!!



    Maybe something a little more heavy duty, those are rated at 3A@ 120v which I believe might be enough. I'm going to try and do a current draw test on the seat motors to see what I need
    A lot of those seat motors can pull up to 30 amps

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