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Author Topic: Regulator / Rectifier which is the output wire? Red or Black?  (Read 636 times)

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Offline Garage_guy_chris

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Regulator / Rectifier which is the output wire? Red or Black?
« on: August 14, 2015, 12:54:19 PM »
I have a quick question regarding the Regulator / Rectifier setup on the SOHC4's.  Im doing a custom harness and wiring job and have upgraded to a solid state combo regulator/rectifier and I noticed the system has two power wires

-constant 12v red wire goes to rectifier stock
-switched 12v Black wire goes to regulator stock

I wanted to know which wire is outputting the charging power ?

It appears the red is the charging output and the black is just a power on / reference voltage but wanted to check before finishing things off
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1971 Cb450 Cafe  (on the road)
1974 Cb750 Restomod (on the road)

Offline calj737

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Re: Regulator / Rectifier which is the output wire? Red or Black?
« Reply #1 on: August 14, 2015, 03:57:03 PM »
If your combo unit is a Ricks, then RED is charging to battery POS and Black is 12v sensing wiring.
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Offline Bodi

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Re: Regulator / Rectifier which is the output wire? Red or Black?
« Reply #2 on: August 15, 2015, 05:51:04 AM »
Yep. red goes directly to the battery and black gets +12V from the ignition switch. The field coil is powered from the black - if that's not switched power, it will drain your battery quickly when the motor isn't running.
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Offline Garage_guy_chris

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Re: Regulator / Rectifier which is the output wire? Red or Black?
« Reply #3 on: August 15, 2015, 08:50:19 PM »
Thanks guys this clears up all my issues, hopefully i can finish the wiring now
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1971 Cb450 Cafe  (on the road)
1974 Cb750 Restomod (on the road)
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