Losing power at idle when turn lights on

[tom203]

After taking a closer look at the electrical wiring, I am now putting things back in place. There are three black lead wires. What does the third wire connect to?? One goes to the negative battery post. One goes to one of the locations that keeps the battery holder in place. What does the third lead wire connect to?? It appears it may go to the negative battery post (which means two of the three leads connect to the negative battery post). What do you think??

They are all very likely an attempt or ensure the battery negative has good ground to frame and maybe the R/R- possibly from factory or an upgrade.
So you cleaned up some connections? Here's a novel idea- repeat the quick test!

All you can check easily in R/R is the rectifying diodes- this don't mean much since the regulating portion is the usual failure point.
Ohm testing a stator is not conclusive- a multimeter uses a small battery to test while a running stator can see much higher voltages that can leap!

[ATM]

Hi

i used my multimeter and turned the setting to ac volts. With the motorcycle running at about 4000 rpm, the voltages were checked
between the different phases of the stator output wires. Here are the results: Phase1 to phase2 - 51 volts ac, phase2 to phase3 - 62 volts ac,
phase3 to phase1 - 13 volts ac. Pretty awful!!

According to the stator papers, the third phase of ac input voltage that runs to the r/r is not regulated by the r/r. As a result, a stator can end up taking all the heat and can get fried. It amazes me that my motorcycle even runs at all. It appears that i may be in the market for an electrosport stator and regulator/rectifier.

Question: If the third phase is not regulated by the r/r, would you not see a high output voltage coming off of the r/r when the lights are on (especially at high rpms)??

[posplayr]

Your three legs should be connected direct to the R/R. Also read GS Stator in my signature before you buy any R/R (especially Electrosport R/R).

[ATM]

My third leg currently runs from the stator output through the lighting on/off switch and then to the r/r input. What difference would running this stator output line direct to the r/r make?? Please explain as i an learning.

[tom203]

My third leg currently runs from the stator output through the lighting on/off switch and then to the r/r input. What difference would running this stator output line direct to the r/r make?? Please explain as i an learning.

If you run with headlight on ( like most), that stator leg up to switch is useless and often causes problems. You need to wire stator direct to R/R and correct other connection problems. Those links at bottom of posplayr's replies need reading, so take advantage! There's a chance that wiring direct will improve your AC test results , but you won't find this out till you do it.