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There seem to be two main ways that the ground loop is attached adjacent to the battery on '70 Mustangs. One way is as shown in the assembly manual, with the loop being held in place through the upper voltage regulator bolt. A bunch of Boss 302's, however, with original aprons, have an additional hole on the apron with the loop being attached by itself through this hole. Does anyone have any info on this? The parts manual shows that the cable was lengthened by two inches in October '69, maybe suggesting that the hole may have been a line fix to get enough cable length to attach the cable to the motor. In particular, does anyone have a 302 or 351 car with the extra hole? When was the car built, and at which plant? The Boss 302's noted do not stay within the pre-October production window.

Thanking everyone in advance.

Carl
 

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Carl- My 9/69 built car has the extra hole. When I first did my car that's where I put the loop. However I was told (Judge) it should be at the regulator as you mention, so I moved it.
 
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