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Post by housefitter340 on Aug 5, 2020 19:36:25 GMT
Hi I am a new member seeking your help
I have a 1980 Honda superdream which I saw working prior to purchase. I power washed the bike, have put a new battery on which has been tested. However I have no ignition lights whatsoever. When I have tried to start by crossing the two terminals over at the selenoid it blows the main 15 amp fuse. What I find unusual is from the selenoid therecare two wires about 4 inches long which are a yellow and red which goes into green and red and a green yellow which goes into a yellow and red.should the yellow and red go into yellow and red.
Should the lights work without the ignition on?
I have sent for a new selenoid
Please help how can I diagnose the issue?
What do you think the problem could be.
The cut off ignition switch is on run.
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Deleted
Deleted Member
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Post by Deleted on Aug 5, 2020 19:50:04 GMT
First thing to check is the wiring connectors behind the left side panel - there are three or four that sit in the bottom of the electrics plate and are vulnerable to road crap / moisture....some of mine were bluey-green with copper corrosion some years back.
Unplug them all and spray them with some electrical contact spray.....I have had a problem there before, resulting in the symptoms you have mentioned.
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Post by Dennismenace on Aug 6, 2020 13:54:33 GMT
I would start with the basics.
Borrow or buy a cheap multi-meter, they sell on eBay for less than £10. Check the battery is fully charged, Check the continuity of the battery earth terminal lead (negative) from the battery to the frame (big nut just in front of the frame behind the engine and under the carbs on the right hand side - an extension of one of the engine bolts). If the multi-meter has a 'sound' function you should hear a 'beep' when there is a good connection between the battery and the earthing point on the frame or see zero resistance (same thing).
For the battery positive terminal, check there is continuity between the terminal and the battery connection on the starter solenoid. You should also register 12v or so if you connect the multi-meter probes to the solenoid battery connection and the frame earth point just mentioned. If all that checks out you should get 12v at the fuse box at the top of the fuse holder with the fuse removed when you connect one multi-meter probe to the fuse holder and one to earth (the engine casing for example. If you do not get 12v trace back the wires to the solenoid to see if they are connected or broken.
Until it is clear what is going on with power to the fuses it is difficult to know what to do next. There are for example terminal blocks in the headlight for the lights, ignition switch etc and 'safety' ignition cut outs for when engine is in gear so you need to check the basics first.
Dennis
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Post by Dennismenace on Aug 6, 2020 13:57:17 GMT
Forgot to say that you will only get power to the fuses with the ignition in the 'on' position, assuming the rest of the wiring is OK.
Why did you suspect the solenoid?
Dennis
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Post by housefitter340 on Aug 16, 2020 15:57:54 GMT
Thank you for your help. I was unable to find any earth cable so have used a proper earth cable connected ot to the frame and battery. I connected the red and white and red wire to the solenoid pressed the starter and it started.
A few other electrical issues still but hopefully will be able to rectify them.
Horn not working, tested the horn that seems ok so trying to trace the wires.
Brake light comes on when you put the tail lamp on and nothing happens when you press the brake front or rear.
But thank you very much for your help.
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