Author Topic: Engine ground on 69 CJ  (Read 235 times)

Offline jgkurz

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Engine ground on 69 CJ
« on: June 18, 2017, 12:51:43 PM »
Hi all, I have noticed Ford installed a ground strap from the engine to the firewall on Mustangs up to 67. This is just an observation with no facts to substantiate. I have looked through my Osborne wiring guide and other schematics and can't figure out if Ford used a ground strap on my 69.

Is there suppose to be another grounding strap in addition to the battery cable?

Thank you.

-John
69 Mach1
Q-code. 428/C6
Dearborn Feb 5, 1969

Offline Bob Gaines

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Re: Engine ground on 69 CJ
« Reply #1 on: June 18, 2017, 01:00:51 PM »
Hi all, I have noticed Ford installed a ground strap from the engine to the firewall on Mustangs up to 67. This is just an observation with no facts to substantiate. I have looked through my Osborne wiring guide and other schematics and can't figure out if Ford used a ground strap on my 69.

Is there suppose to be another grounding strap in addition to the battery cable?

Thank you.

-John
69 Mach1
Q-code. 428/C6
Dearborn Feb 5, 1969
Yes the 69 428 CJ was grounded in the same way (back of head and firewall) as the 67 390 /428 .
Bob Gaines,Shelby enthusiast, Shelby collector , Shelby concours judge SAAC,MCA,Mid America Shelby

Offline jwc66k

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Re: Engine ground on 69 CJ
« Reply #2 on: June 18, 2017, 01:04:15 PM »
Hi all, I have noticed Ford installed a ground strap from the engine to the firewall on Mustangs up to 67. This is just an observation with no facts to substantiate. I have looked through my Osborne wiring guide and other schematics and can't figure out if Ford used a ground strap on my 69.
Is there suppose to be another grounding strap in addition to the battery cable?
It' poorly documented (the drawing is compromised) in the 1969 Mustang Electrical Manual, page 11.
Jiom
I promise to be politically correct in all my posts to keep the BBBB from vociferating.

Offline midlife

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Re: Engine ground on 69 CJ
« Reply #3 on: June 18, 2017, 03:20:26 PM »
That grounding strap was found in 64.5-66 Mustangs as well.  It is the primary grounding point for the battery to the chassis, and is essential for proper electrical operations.   ;D

Offline 7Lscjracer

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Re: Engine ground on 69 CJ
« Reply #4 on: June 18, 2017, 04:00:52 PM »
The black jacketed ground wire with white part number printing was on my car too.
The part number is different for SB & BB.
69 Mach 1 San Jose Nov. 68 build

Offline jgkurz

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Re: Engine ground on 69 CJ
« Reply #5 on: June 18, 2017, 04:24:26 PM »
Thank you all. Just the information I needed. Have a great Fathers Days.