Cagiva Mito 125 regulator and charging system testing .

Need a new regulator rectifier try Ebay UK here 

Need generator alternator try Ebay UK here 

First ill show a quick test on diodes inside you regulator rectifier .

You are just checking current flow through the regulators diodes in forward and reverse bias.

connect + lead of multimeter to further left connector pin 

and common lead to 2nd pin from left you should get a voltage reading of around 0.6 

here i get 0.52 which is ok

then test 3rd pin from left it should give same reading 

now connect common lead of multimeter to left pin and + lead 

of meter to the second pin from left you should get OL telling you no 

current is flowing as it should be.

Now test with + lead of meter to third pin from left and same OL

no current flow 

 

now connect common lead to the further right hand side 

and + lead to second from left you should see 0.6v i get 0.52 which is ok 

move red + lead to thurd pin from left and should get 0.6v again i get 0.506 which is ok

Switch + lead to further right pin and touch blue to second and 

third pins and you should get 0L no current flowing 

That is a quick test the rest of images that follow show tests from Cagiva Mito workshop manual