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Registered
Join Date: Jan 2003
Location: Burford, ON, Canada
Posts: 2,334
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Originally they all had 2 pole switches, but they began to be replaced by the single pole version a long time ago. AFAIK the 2 pole switches are not self grounding, thus requiring the ground pole. The one wire is brown with a yellow stripe and should be connected to the single pole switch. The single pole switch has the benefit of a reset button. I was replacing failing master cylinders after just 7 years of use back in the day, so switches were quickly replaced as they usually came with the M/C.
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Keeper of 356, 911, 912 & 914 databases; source for Kardex and CoA-type reports; email for info
Researching 356, 911, 912 & 914 Paint codes, Engine #'s and Transmission #'s
Addicted since 1975
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