Hardesty435 1 #1 Posted March 11, 2021 I have been messing with this thing off and on for over a year, still don't know what is exactly wrong with it, but I have part of the problem narrowed down, just not sure how to fix, when the battery is hooked up and key off there is a 13 volt drain on the battery (I removed the ground cable and installed volt meter between cable and battery, if I disconnect the two yellow wires coming from my magneto, the drain is eliminated, this model does not have a voltage regulator, but if I'm understanding correctly, it is suppose to have diodes to convert the ac voltage to dc voltage, but i cannot find them. Is it possible they corroded and the last owner cut them out of the wiring harness and that is why it is over charging. Is it possible to wire up a voltage regulator on a model like this? Share this post Link to post Share on other sites
WHX?? 51,371 #2 Posted March 11, 2021 What model Hardy? Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,393 #4 Posted March 11, 2021 Follow the ignition wire and charge wire to the engine and there should be a connector there where the tractor wires and engine wires are plugged together. On the engine side of the connector the charge wire should have a diode in it. Most likely covered with tape to protect the diode. Squeeze the tape and see if you can feel the 3/16" diameter x 3/8" long diode. Garry 3 Share this post Link to post Share on other sites
Achto 29,237 #5 Posted March 11, 2021 Your stator will produce AC voltage. The diode will convert this to DC voltage. The diode should also help to prevent back feed from the battery to the stator. I would think that the charging wire would be connected to the ignition switch, so that it is only connected to the battery when in the run position. 1 Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,393 #6 Posted March 11, 2021 The 2 yellow wires coming from the magneto should really be 1 yellow and one white. You should not have a magneto if the engine is original. The yellow powers the + ignition coil and the white wire will have the diode for charging the battery. The green wire goes to only the lights. Garry Share this post Link to post Share on other sites
953 nut 59,272 #7 Posted March 11, 2021 12 hours ago, Hardesty435 said: when the battery is hooked up and key off there is a 13 volt drain on the battery (I removed the ground cable and installed volt meter between cable and battery, Sorry you are having this problem but glad you found us. If you remove the 15 amp fuse on the small red wire from the solenoid to the wiring harness does the meter still show a drain? 12 hours ago, Hardesty435 said: if I disconnect the two yellow wires coming from my magneto, the drain is eliminated, It could be a problem with some of the insulation on the wires being chafed. Gently move these wires at different points while watching the meter, if the voltage goes away you have found the bad insulation. Share this post Link to post Share on other sites
Hardesty435 1 #8 Posted March 12, 2021 no it does not Share this post Link to post Share on other sites
