ConcoursMustang Forums

1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1970 Mustang => Topic started by: RocketScientist on October 31, 2017, 09:50:49 AM

Title: Wiper motor ground wire
Post by: RocketScientist 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.
Title: Re: Wiper motor ground wire
Post by: specialed on October 31, 2017, 11:17:45 AM
front of cowl  is a grounding hole.
Title: Re: Wiper motor ground wire
Post by: J_Speegle on October 31, 2017, 05:05:42 PM
To illustrate Eds comments

(http://www.concoursmustang.com/forum/gallery/9/6-311017160344.jpeg)

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

(http://www.concoursmustang.com/forum/gallery/9/6-311017160402.jpeg)
Title: Re: Wiper motor ground wire
Post by: RocketScientist 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.
Title: Re: Wiper motor ground wire
Post by: Brian Conway 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
Title: Re: Wiper motor ground wire
Post by: J_Speegle 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 (http://www.concoursmustang.com/forum/index.php?topic=16181.msg101308#msg101308)


Hope this helps
Title: Re: Wiper motor ground wire
Post by: Brian Conway on November 04, 2017, 10:01:48 PM
Great.  Thank you Jeff