A500/A518 Cars, OD and L/U on a toggle or auto?

Transmission and Drivetrain Tech

How to operate Overdrive and Lock Up switch?

  1. Toggle/rocker switches for both

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  2. PATC Conversion kit

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  3. Auto for the overdrive, lock up on a switch

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  4. Switched OD and L/U, with additional brake light switch disconnect

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  1. jrlegacy23

    jrlegacy23 68 Barracuda

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    • MileHighDart

      MileHighDart Well-Known Member

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      As you know, I'm setting up mine right now. I went with rocker switches just for simplicity.
      I figure that will work fine for my driving style. I'm on the highway a lot, and just a little around town so I'll just drive it like a 3 speed in town, and flip the overdrive on when I hit the highway. I don't feel the need to have the overdrive kicking on when i'm driving "in town" kinda speeds 30 - 40, and I don't mind flipping a switch when I want it.
      Mounted the switches in my console right behind the shifter, within easy reach. I was just setting up all my wiring today, for the lights in the switches and got my wires ran from the trans up into my console for the od - kd functions. Hoping to plug it all together tomorrow.

      IMG_20200105_190700368.jpg
       
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      • dartgarth

        dartgarth Well-Known Member

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        When I first did mine I ran simple toggle switches, then I made my own kit like the one above, I didn't need a vacuum switch because I used an output from my sniper injection to help control it. I then switched to the Compushift Mini. It works well in my application because I am running sniper injection and already had a TPS of course.

        COMPUSHIFT Mini Converter Lock-Up Controller to suit Chrysler

        Garth
         
      • jrlegacy23

        jrlegacy23 68 Barracuda

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        How hard was the Compushift to set up?
         
      • MileHighDart

        MileHighDart Well-Known Member

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        Well, I have my A500/42rh swap up and running. Like the switches and the location is right where my hand lands if I lay my hand down on the console.
        Overdrive is working great, cruising at 3000 rpm, flip the switch and rpm drops to like 2100. Love it, but not having so much luck with the converter lockup. The first time I tried it I swear I felt it and got a small drop I'm rpm, but it has not worked since so I'll have to figure out what's going on there.
        But love the O/D.
         
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        • jrlegacy23

          jrlegacy23 68 Barracuda

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          I would not count out those switches being the problem on that lock up either. I have had them heat up and stop working for 10 seconds or so.
           
        • 66fyssh

          66fyssh Don't Stop Believin' FABO Gold Member

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          Dude, that's awesome!! Congratulations!

          One day I'll do the swap.
           
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          • dartgarth

            dartgarth Well-Known Member

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            It was pretty easy to hook up for me. Set up is through your phone via Bluetooth. Pretty cool actually and you can change or adjust it anytime.

            What I have I guess is the Conpushift Mini II actually. I don't know if they sell the old model anymore. Here is the setup and instructions.

            https://hgmelectronics1.atlassian.net/wiki/spaces/CM2M/overview

            have a look through, It will give you a good idea on setup.


            Garth
             
          • MileHighDart

            MileHighDart Well-Known Member

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            I
            I'm not going to rule out the switch, but in this application, the only power going through this switch is for the lights in the switch. For the actual OD or Lockup function all I'm doing is using the switch to ground the wire coming from the trans. So I don't think the switch could overheat, but I guess it could be a bad switch. I have a basic toggle switch somewhere, I could just swap my wires onto that and try it, if it works then my rocker switch would be confirmed bad, if nothing changes, then my problem would be somewhere else.
             
          • plumkrazee70

            plumkrazee70 FABO Gold Member FABO Gold Member

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            What rear gears and tire size?
             
          • toolmanmike

            toolmanmike FABO Staff Staff Member FABO Gold Member

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            That's some good lookin' stuff and I really like the drink holder. @lkopaska
             
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            • MileHighDart

              MileHighDart Well-Known Member

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              3:23 gears, with 225/60/15's which are around 25.5" I believe.
               
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              • TrailBeast

                TrailBeast Slightly Twisted Member

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                I built a kit like the one you posted except the pressure switches I used are adjustable for when they switch.
                If my two toggles are both on the trans shifts up and down fully auto.
                Or I can shut either or both off manually.



                The R's don't drop a lot with the lockup (300 maybe)
                Don't forget to turn lockup off before you take an off ramp and come to a stop.:D

                Also, dont know if you know this yet or not but OD will not come on unless you are in 3rd already since 3rd gear oil also supplies OD.
                This is normal.
                You can activate lockup whenever you want in any gear and any RPM though.:D

                Hope lockup is just the switch, but by now I'm sure you know how to trouble shoot that.
                 
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