I've found some of the harness retainers to be bare sheet metal. I put heat shrink tubing on them. The clips at my distributer cap have white heat shrink tips. CuteRoad Lamp Wire Retaining Clips To Core Support. 70-72 Cuda | Roseville Moparts
First one i found... if they exist here other suppliers will have them. Roseville seems to be be run out of a mopar dealer. They might be oem mopar and available from other dodge dealers?????
https://www.classicindustries.com/product/1967/dodge/dart/parts/b10727.html
Looks like you will have to add your own plastic dip.
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