chris sutton 610 #1 Posted December 17, 2016 Got a briggs engine ive just fitted in a basket case tractor, having trouble with the wiring. the engine has a orange wire and black wire that plugs into a connector that goes to the ign switch, with the engine running and a test light one wire is dim the other is bright. theres a single wire from the blower casing that comes from the magneto, is that to the kill switch? Share this post Link to post Share on other sites
953 nut 51,770 #2 Posted December 17, 2016 The single black wire would be the kill switch. Most B&S engines have a DC wire for battery charging and an AC for lights. Your best bet would be to locate a manual for whatever it came off and check it out. 1 Share this post Link to post Share on other sites
chris sutton 610 #3 Posted December 17, 2016 45 minutes ago, 953 nut said: The single black wire would be the kill switch. Most B&S engines have a DC wire for battery charging and an AC for lights. Your best bet would be to locate a manual for whatever it came off and check it out. Thanks for that, when I bought the wheelhorse it was all in bits and the engine came with it but its not the original. there was no wiring loom either 1 Share this post Link to post Share on other sites
nigel 150 #4 Posted December 17, 2016 Black is the cutout chris Share this post Link to post Share on other sites
gwest_ca-(File Mod) 10,503 #5 Posted December 17, 2016 The single wire is likely the kill wire for the ignition. The red and black are both charging wires. One is AC unrectified to power lights only and the other will have a diode in it to rectify the current to charge the battery. Garry 2 Share this post Link to post Share on other sites
953 nut 51,770 #6 Posted December 17, 2016 Like Garry said, if you can borrow a volt meter rather than the test light you will find that one wire of the pair will have 14 volts +/- DC on it and the other should have about 12 volts AC. If they both have AC then the diode (rectifier) is gone and one will read about 36 volts AC; that would be the charging circuit and will need a rectifier to convert it to DC. 1 Share this post Link to post Share on other sites
oldredrider 2,547 #7 Posted December 17, 2016 I believe one wire should have DC voltage (14+/-) and the other AC voltage (28+/-). DC to charge and AC to the lights. 1 Share this post Link to post Share on other sites
chris sutton 610 #8 Posted December 18, 2016 17 hours ago, gwest_ca said: The single wire is likely the kill wire for the ignition. The red and black are both charging wires. One is AC unrectified to power lights only and the other will have a diode in it to rectify the current to charge the battery. Garry Very helpful Garry, all saved and printed, many thanks Share this post Link to post Share on other sites
