Ground strap ?

YING · Apr 29, 2013

Is it wrong to add an auxillary ground strap from the + side of battery directly to the frame?
74 roadster with stock wiring harness
Thanks,
YING

pete.v · Apr 29, 2013

No, it is not wrong. Are you saying you do not have one now or you just want to add another.

YING · Apr 29, 2013

Pete,
I still have the stock ground on the head steady but wanted to make sure this was not the cause of my stock
rectifier not working.I am in the process of installing a modern regulator-rectifier
Mike

pete.v · Apr 29, 2013

YING said:
Pete,
I still have the stock ground on the head steady but wanted to make sure this was not the cause of my stock
rectifier not working.I am in the process of installing a modern regulator-rectifier
Mike

You still need a dedicated ground from the battery to the frame.

batrider · Apr 30, 2013

One bump and that flasher? will drop down and short a terminal to that bare ground braid. Maybe put the braid into some clear hose or heatshrink it?

acadian · Apr 30, 2013

YING said:
Is it wrong to add an auxillary ground strap from the + side of battery directly to the frame?
74 roadster with stock wiring harness
Thanks,
YING

http://www.gabma.us/elec/proper_grounding.pdf

pete.v · Apr 30, 2013

batrider said:
One bump and that flasher? will drop down and short a terminal to that bare ground braid. Maybe put the braid into some clear hose or heatshrink it?

Do you think I should put clear tubing or heat shrink over the frame tube throughout?

Sorry, I couldn't resist. Point taken.
A close look will show the terminals on the flasher are totally sealed and secured with heatshrink.
It doesn't usually ride right there but moved for the photo. It also has it's own fuse. I like to let it float.

maylar · Apr 30, 2013

The factory location for frame ground on the '74 was right next to the zener diode, down on the right Z-plate. One of the footrest attaching points is a through bolt, with a nut and washer on the back side. The ground wire came from the battery and attached under the washer to the back side of the footrest plate.

Items 18,19, 20 in this drawing:

http://www.oldbritts.com/1973_g15.html

pete.v · Apr 30, 2013

maylar said:
The factory location for frame ground on the '74 was right next to the zener diode, down on the right Z-plate. One of the footrest attaching points is a through bolt, with a nut and washer on the back side. The ground wire came from the battery and attached under the washer to the back side of the footrest plate.

Items 18,19, 20 in this drawing:

http://www.oldbritts.com/1973_g15.html

Yes this is correct, but with a new Pods unit (or the like)and the elimination of the zener and stock rectifier, the new proper spot for ground is the old rectifier mounting point.

That being said, this grounding point is also stated in this explanation for original rectifier mounting.
http://www.oldbritts.com/17_49072r.html

highdesert · Apr 30, 2013

Is it wrong to add an auxillary ground strap from the + side of battery directly to the frame?

no, it is not only not wrong

it is also a very good idea

Ground strap ?

YING

Pittsboro,NC

pete.v

YING

Pittsboro,NC

pete.v

batrider

acadian

pete.v

maylar

pete.v

highdesert

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