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On my 77. The original wiring harness wrap was plastic, no adhesive tape. No cloth wrap anywhere.
although a couple wires have a heat protective sleeve on them.
Lectric Limited sells several types of OEM tape. The most common is the PVC non-adhesive. Certain locations used a cotton back non-high temp adhesive to reinforce branches. TI harnesses were cotton back adhesive high temp.
Hello,
One of the few (maybe only) places that the old fashioned black cloth electrical tape was used is on the vacuum and pcv hose on the left side of the engine.
It was used as 'zip tie'.
Regards.....
Note width of nonstick on left and cloth electrical on right.