electrical problems

[willybob1987]

hey guys i have a slight problem with my electrics on my cg125 copy.
when i put the lights on it seems to kill the battery and the indicators wont work but will do when the lights are off. also when the lights are on and i press the brakes, it dims the lights a hell of alot, almost to the point of nothing.
i thought this was the battery at first so i replaced it but it made no difference at all.
please tell me somebody here has some ideas for me because im really losing my temper with this bloody thing now.

thanks alot
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W, Mulvey

[nightshaddow]

sounds to me like a bad earth
____________________
"WHAT DO YOU MEAN 100 MPH THATS IMPOSSIBLE Its chinese OFFICER."
Current rides CB 125 TDE(the next project) NS125RK ( now on the road ) CB125TDC (soon to be project 17) melody ( the nephews )

[Islander]

[dolly3900]

Agree with the others, sounds like a dodgy earth in the lighting circuit somewhere.

What I would suggest is popping down to your local motor factors an getting a roll of black wire and some scotchlocks.

bit harsh, but chop the earth to each lamp and replace with new back to the battery (or daisy chain them if you are short on space).

Not a pretty solution, but one which will give you a good earth point for the lamps.

Mike

[U_W v2.0]

[Islander]

[dolly3900]

I would have suggested soldering the connections so as to ensure a great electrical connection, but being unsure of the level of skill of the OP, was not sure how good they were.

Suggested Scotchlocks as they are easy to find and use.


The crimp connections are in my opinion just as bad a connection type as them, but at least you don't need special tools for the original solution.

[Islander]

[U_W v2.0]

[AlexW]

On the subject of scotch locks etc, Just look at what manufacturers use, They use proper crimp connectors that rarely fail. Scotch locks fail all the time.

Soldering is IMO a great option vs correctly used crimp connections (And I'm not talking about spade/bullet terminals and that kind of stuff).

[Alpha-9]

[willybob1987]

ok well when i replaced the battery i also replaced the earth cable that connects the negative terminal on the battery to the frame so i know its not that. is there any other earthing points that i can check?

thanks for the help guys
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W, Mulvey

[Efes123]

Depending on how much of a copy it it, here's the wiring diagram (taking from the wiring thread https://www.bikechatforums.com/viewtopic.php?p=2322761#2322761 ) for the CG:

https://s574.beta.photobucket.com/user/hmmmnz1/media/Honda/rebelcmx25087-89.gif.html

Get yourself a multimeter and start checking all the lighting earths
____________________
Honda Goldwing GL 1000 Current love
Honda VT500 ED - SOLD
Projects Suzuki GS125 Done, then stolen - Kawasaki GPX750R SOLD - Honda VF750S SOLD

[Alpha-9]

[willybob1987]

thanks guys. when i get abit of time i will borrow a multimetre and get checking all my wiring. iv heard people talk about the "rectifier" when also taking about electrical problems in older posts. is this worth checking out aswell?
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W, Mulvey