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2008 YZF-R125 (180cc)
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The frame (or engine) would usually be considered earth/negative.

So quite often something (e.g. the starter motor) will have the (starter motor) casing as ground/neg. The starter motor casing touches the frame which is ground so that's your negative.. and it only then needs the single red positive wire.

So to get a ground all you need to do is make sure whatever it is is touching the frame/engine/etc.

What is it you're trying to do?
 

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Discussion Starter · #3 ·
The frame (or engine) would usually be considered earth/negative.

So quite often something (e.g. the starter motor) will have the (starter motor) casing as ground/neg. The starter motor casing touches the frame which is ground so that's your negative.. and it only then needs the single red positive wire.

So to get a ground all you need to do is make sure whatever it is is touching the frame/engine/etc.

What is it you're trying to do?
My bke does this now....

VIDEO

so checking the earths

battery has been changed - and has correct voltage etc - using a Motobatt
 

Super Moderator
2008 YZF-R125 (180cc)
Joined
744 Posts
if you have a multimeter it may be worth checking the fuses are getting power.e.g...tbh it sounds like you're getting into multimeter detective games territory here which might be beyond what can be diagnosed without seeing the bike..If the battery has power.. follow the wire to the ignition under the fuel tank, has that got power? the power will stop somewhere and that's likely where the problem is.
 
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