Re: Need help with 300U Wiring Please!

Posted by janicholson on July 28, 2006 at 16:34:28 from (66.173.50.175):

In Reply to: Need help with 300U Wiring Please! posted by Matt Williams, Arlington on July 28, 2006 at 10:00:02:

Matt, I was there for the call I didn't get. Here goes the best answer I can supply. I hate to see you hanging out there.

The wires you describe are serving more than one purpose. The wires are not at fault, what they are hooked to are. The 8 gauge wire from the starter switch should be attached to the same terminal on the starter switch that connects to the battery (negative if it is stock 6v with generator) the other end of that wire is connected to one side of the amp meter. No other wires should be on that meter terminal. Two or three wires should leave the other side of the amp meter, All of them 10 gauge wire. One goes to the key/or ignition switch to turn on the ignition. Another 10 ga wire goes to the light switch (possibly through a fuse) to give it power. The third goes to the bat terminal on the regulator. The regulator Bat terminal should be not connected to anything inside the regulator when the tractor is shut off. So....wire it like I just said, then, before connecting the battery check the connections on the regulator to be sure they are identified and that the regulator is not toast.

With the wire going to the amp meter from the reg(which should be connected to the Batt terminal on the regulator) disconnected at the regulator, use an ohm meter to see if the terminal is open as follows: Put the meter in rX1 position and touch its two leads together the meter should indicate near zero resistance (that checks the meter). Place one lead of the meter on a shiny good ground on the block or frame, and the other on the bat terminal of the regulator. the meter should not wiggle, it should not show zero ohms, it should remain as it was indicating an open circuit. That is good. If it does not, there are issues yet to be fixed. The other two terminals on the regulator are connected to the generator. The one marked ARM, or A should go to the larger of the two generator terminals. The one markef F should go to the smaller on the two terminals on the gen. If these wires are correct, and the Bat lead tested as described above, then connect the battery at the battery cables, and then touch the wire from the amp meter to the bat terminal on the regulator to the terminal (engine off) there should be no spark. If there is, the regulator is toast. Replace it with a new one and try it again. This is about as far as we can get without further teating, start the tractor and see if it charges. if so yea, if not get back to us on a new posting. What I have described should prevent burnt wires. Good luck, and check out this site archives for Bob M wiring diagrams. JimN
It is just the wires from the voltage regulator to the amp meter to the switch to the starter

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