OutdoorKing Repair Forum Forums Restoring, Customising and Modifying Tech Talk victa pro with tecumseh 13 hp wiring troubles.

A Private Message. That wiring is and was crazy, leshby, just remove it and put things back the way that Victa had them. Negative to upstream 15, positive to downstream 15, and no connections to the AC terminals. That will make it act like a single diode in the line, just like Victa had.

Hello Grumpy, I have disassembled the wiring and checked everything the blades switch was the problem the wire 13 was a loop to wire 10 to position M (key) and also to the headlights earth. Cut them all and rewired to the diagram Ran a new violet wire number 13 to the main earth strap and wallah it all works (rotten naughty potty word auto electrician) was a mate who did it for free and didn't want to do it. should have done it myself. Now i have left the square voltage rectifier the so called auto electrician wired in in wire 15 the right way round. the red wire from the Tecumseh has the original diodes in it will that matter with an extra one(the square one) Have just got to tidy up now i rewired a rewired mower correctly. Thank you for your patience and all of your help

Thanks for the report leshby, it sounds as if all is well when you do things the Victa way. Putting random diodes between functions that are required to be electrically isolated is, basically, dumb.

Also, remember that each time you add an extra diode in series with the standard Victa charging circuit it causes an additional voltage drop of 0.7 Volts, which will decrease your battery charge rate a bit, but otherwise it has no effect. In this case, by using a diode ring rectifier (bridge rectifier) where there should be a single rectifier, it doubles that voltage drop to 1.4 Volts, which will have a noticeable effect on what you see on the ammeter. It would be a better job if you ignored the red wire from the engine (didn't connect it at all), and just connected the yellow wire to the same place you connected the alternator wire from the Briggs: the terminal on the end of wire 6. At the same time you could replace the bridge rectifier with a single diode, as shown on the wiring diagram. If you did all that, it would work exactly the way Victa intended, with no extra voltage drops. Of course the headlight circuit would work too. However until or unless you do that, you will get some kind of charge from the way you have it wired, it just won't be much.

And of course the safety circuits will work, now that you have wired them the way the diagram shows, without various diodes shorting circuits to each other.

Looking on the positive side, your mate may not be a great sparky, but he's obviously a good mate. And now you've learned quite a lot from sorting it all out afterwards.

I'll close this thread. If anyone needs to post to it, just send a PM to a moderator.