4spd w/Cruise Control - Clutch Off Switch?

Electrical & Ignition

  1. PurpleBeeper

    PurpleBeeper Well-Known Member

    Messages:
    3,357
    Likes Received:
    2219
    Joined:
    Mar 20, 2011
    Location:
    Chicago
    Local Time:
    6:52 AM
    I know cruise control didn't come on 4-speed cars from the factory. It didn't come on 440 six pack motors either, but this isn't stopping me. I've got the whole setup (for an automatic) 75% installed....but I realize that I need to have a "clutch pedal/cruise disengage switch" in addition to the "brake pedal/cruise disengage switch"....duh.

    So, I'm sure I can fabricate some small bracket to mount a switch on the clutch pedal lever, but what switch should I use??? Now, the brake switch disengages the cruise once pressed, until you re-set the cruise on the turn signal switch. I'm thinking the clutch pedal switch would need to be basically the opposite of the brake switch....once released the switch disengages the cruise until you re-set it.

    Any suggestions or ideas? Suggested switches from a junkyard ("brand X") or local parts store? THANKS FOR ALL YOUR IDEAS & SUGGESTIONS!
     
  2. 72RoadrunnerGTX

    72RoadrunnerGTX Well-Known Member

    My Photo Garage
    Messages:
    819
    Likes Received:
    470
    Joined:
    Jan 14, 2009
    Location:
    Seattle, Washington
    Local Time:
    4:52 AM
    I did that on a ’70 Road Runner, six-pack 4-speed back in the day. IIRC, made bracket, added a second pedal switch, wired in series with the brake switch, either switch kills the CC. Ran it for years no problems.
    scan13.jpg
     
    • Thanks! Thanks! x 1
    • MCODECUDA

      MCODECUDA Well-Known Member

      Messages:
      117
      Likes Received:
      53
      Joined:
      Jul 22, 2008
      Location:
      Mooresville, NC
      Local Time:
      6:52 AM
      You could just add a brake switch to the to the clutch and splice it into the wiring.
       
      • Thanks! Thanks! x 1
      • PurpleBeeper

        PurpleBeeper Well-Known Member

        Messages:
        3,357
        Likes Received:
        2219
        Joined:
        Mar 20, 2011
        Location:
        Chicago
        Local Time:
        6:52 AM
        Thanks 72RoadrunnerGTX...and by the way, your cruise/carb throttle bracket for the six pack worked out GREAT! How exactly did you set up the 2nd switch on the clutch pedal???
         
      • PurpleBeeper

        PurpleBeeper Well-Known Member

        Messages:
        3,357
        Likes Received:
        2219
        Joined:
        Mar 20, 2011
        Location:
        Chicago
        Local Time:
        6:52 AM
        d
        Hey MCode, walk me through that idea please. I'm sure it would be a WHOLE lot easier if I could just add a 2nd Mopar brake light switch on the clutch pedal.

        In my head (could easily be wrong), I'm thinking that I need the cruise to disengage with even a slight push on the pedal. The brake pedal is already set up like that so your brake lights come on right away when you push the brake pedal. However, the travel on the clutch pedal is WAY longer & I'm "thinking" I need a clutch switch that is being pushed all the time with the clutch pedal in the UP position & when the clutch pedal is pushed the switch is released and that turns off the cruise. I'm "thinking" that if I just put in another Mopar brake switch, the cruise would only disengage if I pushed the clutch pedal to the floor basically.... no Bueno. Does that sound right?
         
      • 72RoadrunnerGTX

        72RoadrunnerGTX Well-Known Member

        My Photo Garage
        Messages:
        819
        Likes Received:
        470
        Joined:
        Jan 14, 2009
        Location:
        Seattle, Washington
        Local Time:
        4:52 AM
        Get a second CC brake switch, the CC portion is a small pigtail, two blue wires, IIRC. It’s a simple normally closed switch, pedal up, circuit closed. Build a bracket to secure the second switch to the clutch pedal movement similar to the brake switch. Pull one wire from the connector at the brake switch, connect the clutch switch leads in series with the brake switch. Both pedals up, circuit closed, either pedal switch will open the circuit.
         
        • Agree Agree x 1
        • PurpleBeeper

          PurpleBeeper Well-Known Member

          Messages:
          3,357
          Likes Received:
          2219
          Joined:
          Mar 20, 2011
          Location:
          Chicago
          Local Time:
          6:52 AM
          Did you drive your car a lot with that type of cruise setup & did it work OK? That would sure be A LOT simpler than what I've been thinking about. I'm concerned that the clutch switch wouldn't de-activate the cruise fast enough since I'd have to have the clutch pedal to the floor to hit the switch & while pushing in the clutch pedal the engine would rev up a lot....or am I worried about nothing?
           
        • 72RoadrunnerGTX

          72RoadrunnerGTX Well-Known Member

          My Photo Garage
          Messages:
          819
          Likes Received:
          470
          Joined:
          Jan 14, 2009
          Location:
          Seattle, Washington
          Local Time:
          4:52 AM
          That car was my daily driver for years, used the CC quite a-bit, no issues. Not sure I’m following your question, both switches should be adjusted to open the CC circuit just off pedal rest position. While freeway driving, typically tended to tap the brakes first at sudden slowdowns anyway. That would disengage the CC prior to downshifting. The clutch pedal switch would be more of safeguard for the engine.
           
        • PurpleBeeper

          PurpleBeeper Well-Known Member

          Messages:
          3,357
          Likes Received:
          2219
          Joined:
          Mar 20, 2011
          Location:
          Chicago
          Local Time:
          6:52 AM
          Gotcha. Here's what I'm asking. It makes sense that BOTH pedals should disengage the cruise just off of "pedal rest", so how did you do that with the clutch pedal?

          The more I think about it.... the brake switch is always being pushed at "pedal rest", right? So, when you push the brake pedal, the brake switch button is RELEASED, not pressed, and that lights up your brake lights (& turns off cruise). So, I would need to mount another switch in a similar way, right? I push in the clutch pedal, the added switch is RELEASED, and the cruise turns off. Does this sound right???
           
        • 72RoadrunnerGTX

          72RoadrunnerGTX Well-Known Member

          My Photo Garage
          Messages:
          819
          Likes Received:
          470
          Joined:
          Jan 14, 2009
          Location:
          Seattle, Washington
          Local Time:
          4:52 AM
        • 68gtxman

          68gtxman FBBO Gold Member FBBO Gold Member

          My Photo Garage
          Messages:
          1,474
          Likes Received:
          3162
          Joined:
          Aug 23, 2011
          Location:
          Eastampton, NJ
          Local Time:
          7:52 AM
          I added aftermarket cruise to my 1972 Chevelle. It had a 350 and a 4 speed. I never did anything to it for a clutch drop out switch and never had a problem with it disengaging. Of course, I always hit the disengage button or tapped the brakes before I stepped on the clutch or popped it into neutral. Just use the brake switch and be conscious of CC engagement before you hit the clutch.
          61131AEA-B3E5-4E7E-9ED3-47A77D8E8E33.jpeg B3B1E831-CC29-4D4C-B1F3-8F32E93EF615.jpeg