BSA Owners' Club Forum

The BSA Workshop => Singles => Topic started by: TIGERJ on 28 February, 2017, 11:31:41

Title: Rectifier
Post by: TIGERJ on 28 February, 2017, 11:31:41
As some of you know I am wiring a C15 SS.
I have a rectifier,came with the bits,it's a square alloy looking block centre drilled,4 connections.
Any idea how it is connected !
Also what about location the harness points to near the toolbox.
Regards
            Tim
Title: Re: Rectifier
Post by: JulianS on 28 February, 2017, 12:29:30
This is a modern replacement. They cost around 5 from e bay sellers.

The terminal set at right angles to the other 3 is the positive dc output (to earth if you have positive earth). usually marked with a plus.

The terminal diametrically opposite is the negative dc output.

The other 2 termials are alternating current input from the alternator. May be marked with a squiggle to signify ac.

Generic wiring diagram from Lucas manual for bikes with C15 type ignition and lighting switches below.

Title: Re: Rectifier
Post by: Arthur on 28 February, 2017, 12:37:31
Also what about location the harness points to near the toolbox.
Not sure what you are asking? One of the main things you need to ensure is that you've got a good earth to the frame. Normally, you can achieve this on the C15 using the rectifier bolt though the cross member under the seat. Make sure you scrape away the paint to give good contact to the frame. The battery earth wire can go to the same point.
Title: Re: Rectifier
Post by: TIGERJ on 28 February, 2017, 16:57:56
Thanks for that.
Julian
         Am I correct in assuming that after connecting the output cables the other two from the
         alternator can be either terminal way round ?
Title: Re: Rectifier
Post by: Bess on 28 February, 2017, 17:23:22
Hi,
    As the connection from the alternator is ac, connecting either way is okay.
Title: Re: Rectifier
Post by: TIGERJ on 28 February, 2017, 22:52:03
Thanks Bess
Title: Re: Rectifier
Post by: Bess on 01 March, 2017, 10:00:24
Your welcome, hope all goes well....