rugrat12 Posted January 7 Report Share Posted January 7 Hi all you lovely people I hope one of you can help or at least point me in the right direction. I have been given a Beta Zero trails bike that has a few wiring problems. I'm looking to get hold of a wiring diagram as I'm not sure if there are a few bits missing. I think the year of the bike is around 1989 1990 from what bit of research i have done. So I'm hoping someone out there has a diagram tucked in the back of there shed. Kind regards AR Quote Link to comment Share on other sites More sharing options...
KeithNewby Posted January 9 Report Share Posted January 9 I have one with no spark too. I have found this so far but can’t find any readings for resistance etc. Quote Link to comment Share on other sites More sharing options...
KeithNewby Posted January 9 Report Share Posted January 9 There is also this old thread on here titled 93 beta zero ignition systems. Let us all know how you get on with it. Quote Link to comment Share on other sites More sharing options...
rugrat12 Posted January 9 Author Report Share Posted January 9 Hi keith i don't spose you have a picture of you bike's wiring I'm trying to wire the fan and kill switch. I interested in item 6 in the picture the Rectifier and if that's a separate part or part of the flywheel assemble because I think it is missing on my bike. Thank you for your response AR Quote Link to comment Share on other sites More sharing options...
kurtas Posted January 9 Report Share Posted January 9 Kill switch should be easy, You need to connect it between ground and the wire that goes into the HT coil. The regulator is normally not part of the flywheel/stator, generally it is located up in the area of the frame above the engine. Quote Link to comment Share on other sites More sharing options...
lemur Posted January 10 Report Share Posted January 10 (edited) Part #10 is your alternator, the diagram indicates it is single phase. That means there is a single coil inside the alternator and that coil will have some measurable resistance between the yellow output wire and ground. Output from that coil during operation will be alternating current AC well in excess of the 12 volts (or whatever) DC volts that your fan requires. The job of the regulator (part 18) is to limit the voltage from your alternator and regulators produce heat in that process, so regulator will be located somewhere appropriate to heat dissipation and cooling. The job of the rectifier is to convert some power from the regulators ~12 volt AC output to 12 VDC which is appropriate to your thermostat switch and fan motor. Incandescent lamps are happy to run on AC so that is why your fan is the only thing running off the rectifier. ... none of which has much to do with your spark ignition, that would be controlled by parts 10, 4, 11 &12. Alternator, Ignition control module, ignition coil and spark plug. Edited January 10 by lemur Quote Link to comment Share on other sites More sharing options...
KeithNewby Posted January 10 Report Share Posted January 10 Unfortunately my wiring has already been messed with but wired from stator are correct and are linked as per the diagram. Blue to the coil is a larger connector so must be correct. With a spur going to my kill switch as per numbers 9-5. Quote Link to comment Share on other sites More sharing options...
KeithNewby Posted January 10 Report Share Posted January 10 These wires to my “regulator? “ look correct but I have no rectifier which perhaps should be where the wires are twisted. Quote Link to comment Share on other sites More sharing options...
lemur Posted January 10 Report Share Posted January 10 Everything you have there can be electrically tested easy except the ignition control module (part #4) you need a second running motorcycle of same model to test that part 100% certain. Make western union splice joints in your wire connections not pig tails, they work better. Quote Link to comment Share on other sites More sharing options...
lemur Posted January 10 Report Share Posted January 10 4 minutes ago, KeithNewby said: These wires to my “regulator? “ look correct but I have no rectifier which perhaps should be where the wires are twisted. This part does not comply with the wiring diagram, could be we are looking at a combined regulator rectifier part. Quote Link to comment Share on other sites More sharing options...
lemur Posted January 10 Report Share Posted January 10 Do you have a VOM (volt ohm meter) if you do then test for resistance (ohms) between the yellow wire coming out of the alternator and ground. Have you removed the flywheel yet? ... a photo of what is inside there would be helpful, we are looking for breaker points or a magnetic pickup to control when the spark happens. Quote Link to comment Share on other sites More sharing options...
rugrat12 Posted January 11 Author Report Share Posted January 11 I don't spose anybody has part numbers for the rectifier and the regulator and availability that would be great AR Quote Link to comment Share on other sites More sharing options...
lemur Posted January 11 Report Share Posted January 11 Lots of rectifiers or regulators would work, those are about the least 'special' parts in the whole electric system, everything else is more difficult to substitute and unique to fit the model. Quote Link to comment Share on other sites More sharing options...
KeithNewby Posted January 11 Report Share Posted January 11 Managed to get the flywheel off despite not having the correct puller. These are what’s inside. The bottom of the windings had a spring loaded plate which may act as a magnetic points system? Quote Link to comment Share on other sites More sharing options...
KeithNewby Posted January 11 Report Share Posted January 11 1990 Zero.pdf parts diagrams for reference Quote Link to comment Share on other sites More sharing options...
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