Wed Nov 17, 2021 7:30 pm

Enthusiast
Joined: 21 Nov 2017
Posts: 62

 
Enthusiast
Joined: 21 Nov 2017
Posts: 62

Wed Nov 17, 2021 7:30 pm linkquote
Hello and good day folks! Upon checking all the wires coming from the stator without anyting being connected. I get some sort of reading, but nothing off the blue wire. I know that the blue and the yellow wire are connected to the same coil and I'm curious if I don't understand the system correctly. Does the yellow act as the ground or blue only has current if it's grounded? Please help! Greatly appreciated for everyone's time
Fri Nov 19, 2021 9:52 am

Hooked
1964 Piaggio Allstate Cruisaire
Joined: 15 Aug 2021
Posts: 111
Location: York, PA
 
Hooked
1964 Piaggio Allstate Cruisaire
Joined: 15 Aug 2021
Posts: 111
Location: York, PA
Fri Nov 19, 2021 9:52 am linkquote
What is the make model and year of what you're are working on?

https://www.scooterhelp.com/electrics/electrics.html
Tue Nov 23, 2021 9:11 am

Enthusiast
Joined: 21 Nov 2017
Posts: 62

 
Enthusiast
Joined: 21 Nov 2017
Posts: 62

Tue Nov 23, 2021 9:11 am linkquote
Hey hey its a mid 60's 150cc vbb. Stator has 5 wire in total and it's on 6v system
Tue Nov 23, 2021 9:25 am

Hooked
1964 Piaggio Allstate Cruisaire
Joined: 15 Aug 2021
Posts: 111
Location: York, PA
 
Hooked
1964 Piaggio Allstate Cruisaire
Joined: 15 Aug 2021
Posts: 111
Location: York, PA
Tue Nov 23, 2021 9:25 am linkquote
See if what you have matches.



Tue Nov 23, 2021 1:25 pm

Addicted
Old douglas ..smallie with polini 115..super with nasco 177
Joined: 07 Nov 2013
Posts: 659
Location: New Zealand
 
Addicted
Old douglas ..smallie with polini 115..super with nasco 177
Joined: 07 Nov 2013
Posts: 659
Location: New Zealand
Tue Nov 23, 2021 1:25 pm linkquote
the blue and yellow wires dont touch each other. They are wound round the same plastic holder for convenience of space and separated deeper in side where you cant see
The earth is usually connected to one of the coil holding down screws. or at the far end end of where the yellow of blue wire terminate (brake or lights)

You have to replace the whole coil (very easy)
Tue Nov 23, 2021 8:13 pm

Member
'63 GL, '74 PV
Joined: 11 Oct 2021
Posts: 10
Location: Chicago
 
Member
'63 GL, '74 PV
Joined: 11 Oct 2021
Posts: 10
Location: Chicago
Tue Nov 23, 2021 8:13 pm linkquote
areabaylove wrote:
Hello and good day folks! Upon checking all the wires coming from the stator without anyting being connected. I get some sort of reading, but nothing off the blue wire. I know that the blue and the yellow wire are connected to the same coil and I'm curious if I don't understand the system correctly. Does the yellow act as the ground or blue only has current if it's grounded? Please help! Greatly appreciated for everyone's time
What kind of readings are you doing? If this is the later VBB (as posted above) then it's the same as my GL. The ignition and headlight circuits can be said to have a ground, but not really the blue/yellow tail/brake/pilot light circuit.

When the brake pedal isn't down, the brake switch connects blue to black, so the coil powers only the tail light and pilot (in parallel). When you brake, the current runs through the brake light (on the blue wire), then to the tail light and pilot in parallel (black wire) then to the coil (yellow).
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