Help me get my tail-light working

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mattwilkinson

Joined
Jun 19, 2014
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So this is hopefully the last of my troubles, As it's the last major thing that needs to be fixed apart from the water pump seal.


Basically my brake/tail light is very very dim, And I think is getting 0.5 Volts (not sure)


Can someone tell me how to correctly test it with a multimeter?



I tested the connection halfway down the bike (The connection near the fuses to the one near the headlight)

Now I set my multimeter to this: (take note of what setting)



Now I tested this connection, I put the Black (negative) tester from the multimeter into the centre socket (white wire), And the Red (positive) tester in the sockets on either side (Green + Orangy Brown).

Now on the setting the multimeter was on I got a reading of around 0.5
Is this correct, or have I tested wrong?

Matt
 
I hooked up a 12v battery charger to the rear brake assembly and the bulb and end section are fine,

Seems to be that I am loosing pretty much all my power at the part where the connector meet under the headlight to where it connects to the tail light assembly.


What do I need to look out for that would still give out a tiny reading, corroded plugs or stripped wires?
 
Matt.

I would look for exactly what you stated. Also Run down the chassis with the positive and negative wire to make sure it is not stripped anywhere...

Clean the connector plug of any dirt...

Change the fuse to be safe... I had a crappy fuse... Was never blown just did not pass the Volts/amps through?

Also could be a charging issue... not enough juice maybe?
 
Do you think it could be the battery? The guy I bought
It off had the bike sitting for probably 3 months at a time so the battery is probably dead


But once the bike is running I thought it would get power from the engine. Headlight low/hi beam and horn are fine


Also do you know if I used the correct setting on the multimeter?
 
Matt,

Yes you used the right setting on the voltmeter...

As for it being the battery - - - Theoretically it could be that the battery is draining power because its trying to charge (if the battery is bad that is) which causing it to draw most power from whatever is going behind it...

Now I am not sure how the electrical harness is ran in the burgs ... Never had a problem in mine so never looked..

But you can take your battery to a local parts store or dealer ship to get it tested.

I am not sure if this would apply to a motorcycle becuase the charging system is a little different. SO try at your own risk:

Here is an older automotive trick I learned from my old man.

CAUTION: DO NOT DO THIS FOR MORE THAN APROXX 5 min. This could cause damage to the stator/alternator.

Start the bike. disconnect the positive cable on the battery. If the charging system is okay, the bike should not stall.

Also if its putting out the proper values. all the lights should be brighter.
if the battery is bad, and there is no other problem, your rear light should work...

My advice, take the battery and get it tested at a parts store or stealer ship...
 

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