Topica Loopframe_Guzzi Archive
 

Subject: RE: Found the coil - testing tach

Author: Gunnar Schwede

Date: May 24, 2005, 12:49 PM

Post ID: 1718917563


AJ,

Did you try to use use a hot lead (12volt) on the blue/black wire side?
The black is ground, blue/black gets the voltage from the contacts
(points) which is interrupted according to the opening of them, thus
supplying more voltage at higher rpm. Using straight 12volt should move
the needle all the way to max rev...
Before checking Ebay I would open the tach to check for loose
connections. Not much can go wrong with one of those other then
connection problem or burned through wiring..

Gunnar


AJ Huff wrote:
 
DOH! I got it thanks!!!

Jumpering didn't work so I guess it is dead. There isn't another way to
test a tach is there?

Guess I'm looking at eBay or repair.

Thanks to everybody who told me to look up :)

-AJ

At 02:47 PM 5/24/2005, you wrote:

 -------------------------------------------------------------------

directly underneath the middle section of the frame-




AJ Huff wrote:
 
Oh don't hate me for this one, but where is my coil??

I am trying to troubleshoot my tach, which "suddenly quit" according to
the
previous owner.

I seem to have a good ground.

I have continuity through the blue-black wire (should be positive side
of
coil).

I have NO continuity through the black wire (should be negative side of
coil).

I want to run an external jumper from the negative coil to the black
terminal to see if its a break in the wire. But I don't understand where

the coil is. I know so sad.

Thanks for your pity and help.

-AJ



AJ Huff
'71 Ambassador
Three Rivers, MI
MGNOC# 19917



http://www.72guzzi.2ya.com/

Entire thread: