CA77 Yellow wire from ign to rect ... where do they connect?

rzgkane · Post by **rzgkane** » Wed Feb 29, 2012 11:47 am

Just curious if anyone knows precisely where in the loom the yellow wire that comes from the ignition switch taps into the yellow wire from the stator before it hits the rectifier? This is the wire that receives current from the pink stator wire when the ignition switch is in the headlights-on position.

Greggie-e · Post by **Greggie-e** » Mon Mar 05, 2012 7:59 am

My loom is not what I would call the best, but from what I can tell....
If you look at where the yellow wire from the stator "t-junctions" into the main loom, it is there.
In other words just behind the carbi.

If you disconect all the wires from the battery, then disconnect all the wires under the opposite "panel" then you should be able to pull the loom out next to the carb.

This will give you access to the area.

In the picture I have stripped the loom tape from the loom and you can see the brown wire and one of the yellow wires making a 90 degree turn. Just after this you can see the joint of the three yellow wires.

Ignore the yellow and red wires in the back ground, they belong to the electronic ignition.

Just as a thought, if this yellow wire from the switch only works when the headlight is on should we not just connect the pink wire to the yellow junction, thus giving better charging all the time?

cheers,
Greg

rzgkane · Post by **rzgkane** » Mon Mar 05, 2012 9:00 pm

I read in a few places that you run the risk of overcharge if you connect the pink to the yellow all the time. Given the meager output from my bike's system, though, I see little chance of it. If my bike is at 12.25V while running I consider it golden.

Although, as a practical matter, here in CA you have to have the headlight on whenever you are riding it on a public street so the pink is pretty much always connected to the yellow anyhow, right?

Greggie-e wrote:My loom is not what I would call the best, but from what I can tell....
If you look at where the yellow wire from the stator "t-junctions" into the main loom, it is there.
In other words just behind the carbi.

If you disconect all the wires from the battery, then disconnect all the wires under the opposite "panel" then you should be able to pull the loom out next to the carb.

This will give you access to the area.

In the picture I have stripped the loom tape from the loom and you can see the brown wire and one of the yellow wires making a 90 degree turn. Just after this you can see the joint of the three yellow wires.

Ignore the yellow and red wires in the back ground, they belong to the electronic ignition.

Just as a thought, if this yellow wire from the switch only works when the headlight is on should we not just connect the pink wire to the yellow junction, thus giving better charging all the time?

cheers,
Greg

Greggie-e · Post by **Greggie-e** » Mon Mar 05, 2012 9:37 pm

Yep, that would be my understanding, although the charging to the battery would be tempered by the fact that the headlight is on.

My thoughts on the matter are that when these bikes were made a voltage regulator was an expensive thing.
So instead of using a regulator they kind of regulated the voltage by having more power go to the battery when the lights were on. Less when off.

With today's electronic wizardry I would have thought that the inclusion of a voltage regulator and the wiring of the extra power wire would be the way to go.

Has anyone done this?