Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  

Idiot Light

Recommended Posts

Does anyone have a wiring diagram that shows how to wire a light to indicate discharge on one of the starter/generator setups? I had the diagram at one time, but can't seem to find it. I want to put a charge light on my AC712S project tractor.

Share this post

Link to post
Share on other sites
You need a two wire light, NOT externally grounded. On wire goes to the accessory terminal of the ignition switch, the other to the ARM or GEN terminal of the regulator or starter/generator. The easiest explanation is that the ARM terminal is the ground for the light until the generator starts charging. When charging starts, you have a live wire to both sides of the lamp, so the lamp goes out. Pat

Share this post

Link to post
Share on other sites
My Homelite T12 wiring diagram confirms Pat's answer. Per the diagram, the light is wired between the middle terminal of the starter/generator's voltage regulator (assume this is the "arm" terminal, don't have my tractor here to confirm) and the key switch.

Share this post

Link to post
Share on other sites
Thanks Pat, I knew the voltage balance theory, but just couldn't remember the specific connections to pick up the control voltages. Still trying to get the actual hookup and function of starter/generators straight in my mind. Been playing with cars since a kid, but these units are still a little fuzzy to me, even after reading Al's write-ups.

Share this post

Link to post
Share on other sites
This topic is now closed to further replies.
Sign in to follow this  

  • Who's Online (See full list)

    • Ronald Hribar
    • JClubine
    • PhanDad
    • s_stephen
    • PGL
    • 720nut
    • timmangan
    • tripleguy
  • Today's Birthdays

    1. 9934059
      (71 years old)
  • Recent Status Updates

    • jbrooks

      jbrooks  »  Talntedmrgreen

      folowing  this from a link at the downloads.  I just rescued an AC 920 with the lambodini diesel. I can' t download  yet .  Where did you find the PDF copy you posted. . I would like to figure out how to adjust the injection pump. 
      I assume it's a bosche, correct
      · 0 replies
    • dav-1

      dav-1  »  Talntedmrgreen

        Over a year ago, you answered a question I had about the tool bar for my FDT. In your reply dated Dec 31, 2019  you said the spacer, part #16, goes in the bar to allow for up and down depth adjustment. does this mean the bolt has to be tightened at whatever depth desired or does the bolt slide up and down, allowing the lower hitch to free float?
         If it is tightened so the lower hitch and the bar are rigid, then is the depth to be controlled by the shoes? Or by the lift handle?
        Is there any kind of user directions for the tool bar? The Outdoor Power Manual basically shows how to assemble the bar but not how to use it
      · 1 reply
  • Adverts