Ammeter plus and minus

DogT

VIP MEMBER

Joined

Jan 20, 2009

Messages

7,394

• Sep 18, 2010

• #1

Which is which. I have it installed and can't see it. Last thing I need to do for the harness in the headlamp shell before buttoning it all up.

Dave
69S

 

kommando

Joined

May 7, 2005

Messages

7,163

• Sep 18, 2010

• #2

Wrong answer :shock:

 

DogT

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Jan 20, 2009

Messages

7,394

• Sep 18, 2010

• #3

Yes, that is marked on the face, but which terminal is + and which is -.

Dave
69s

 

K

KEV-C

Joined

Jul 19, 2009

Messages

39

• Sep 18, 2010

• #4

Hi Dave
connect wires any way then turn lights on if showing discharge it is right if showing charge change wires around.

 

7

79x100

Joined

May 19, 2006

Messages

1,612

• Sep 18, 2010

• #5

If there's a small flash accompanied by the sound of the fuse popping then you've shorted it !

 

DogT

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Jan 20, 2009

Messages

7,394

• Sep 18, 2010

• #6

I put a 9V battery across it. Looks like + is on the timing side.

Dave
69S

 

F

frankdamp

Joined

Oct 7, 2005

Messages

1,170

• Sep 19, 2010

• #7

Needle on the + side of the scale - your alternator is putting more current into the battery than the bike's system is drawing out. Needle on the - side, the battery is being drained faster that the alternator can top it up. Needle rattling back and forth means engine or road vibration is affecting the meter movement.