Author Topic: Wiper motor ground wire  (Read 269 times)

Offline RocketScientist

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Wiper motor ground wire
« on: October 31, 2017, 09:50:49 AM »
I am assuming that the wire attached to the wipe motor is a ground wire but where does it connect to the car? it's a March 70, car.

Offline specialed

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Re: Wiper motor ground wire
« Reply #1 on: October 31, 2017, 11:17:45 AM »
front of cowl  is a grounding hole.
« Last Edit: October 31, 2017, 11:19:54 AM by specialed »

Offline J_Speegle

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Re: Wiper motor ground wire
« Reply #2 on: October 31, 2017, 05:05:42 PM »
To illustrate Eds comments



Red arrow is the mounting screw for the bracket (someone must have placed what was left of the ground wire there so not to lose it)

Green arrow is the grounding wire - goes to a separate grounding location on the face of the cowl

Jeff Speegle

Anything worth doing is worth doing concours ;)

Offline RocketScientist

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Re: Wiper motor ground wire
« Reply #3 on: October 31, 2017, 09:28:19 PM »
Thanks everyone. When parts get old and crusty it can be hard to tell what's right and wrong.

Offline Brian Conway

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Re: Wiper motor ground wire
« Reply #4 on: November 01, 2017, 12:53:49 PM »
So is the grounding screw finish P&O ?  Will that be a universal finish for all years and plants ?  Brian
« Last Edit: November 01, 2017, 04:10:00 PM by Brian Conway »
5RO9A GT  4 Spd Built 5/29/65
9TO2R SCJ 4 Spd Built 9/19/68
San Diego, Ca.

Offline J_Speegle

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Re: Wiper motor ground wire
« Reply #5 on: November 04, 2017, 08:52:01 PM »
So is the grounding screw finish P&O ?  Will that be a universal finish for all years and plants ?  Brian

For a 69 NJ car the wiper mount bolt in the visible cowl looks to be P&O while the ground wire screw appears to be the typical zinc dichromate that we often see associated with electrical applications of this type

Example picture E7 in the link below. Type of screw and washer may have changed during 69 NJ production as I found a different style used late in the year but that detail  does not relate to your car

http://www.concoursmustang.com/forum/index.php?topic=16181.msg101308#msg101308


Hope this helps
Jeff Speegle

Anything worth doing is worth doing concours ;)

Offline Brian Conway

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Re: Wiper motor ground wire
« Reply #6 on: November 04, 2017, 10:01:48 PM »
Great.  Thank you Jeff
5RO9A GT  4 Spd Built 5/29/65
9TO2R SCJ 4 Spd Built 9/19/68
San Diego, Ca.