I'm putting everything back together after replacing a leaking fuel injector and found this engine harness ground is not attached on the driver side rear.

There are a couple of open bolt holes on the back of the head so does this engine harness ground need to be attached back there or does it go somewhere else???



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Doug with Atlantic British says it should be attached at the back of the head; start at ~42:30

 

It's not an actual ground, just a way to secure the wiring harness. Mine is not re-attached simply because it's very difficult to get access to the 13mm headed bolt that is used.

 

But there is a ground strap that does attach to the head. It’s very important that it gets attached. The electricity will find its way to ground through places where you don’t want it to go. The starter especially uses a lot of amperage and the electricity that returns to the chassis will damage the parts that it goes through. The park brake cable is a common one.