Holes larger than 9/32"?

Electrical Tape
Tightly wrap 2" of high-quality electrical tape around the plug stem. Squeeze this as you insert the plugs and the tape should expand behind the bumper cover to hold them firmly in place.

Shrink Tubing
Insert shrink tubing (insulation used on coax, phone charging cables) to provide a thicker sleeve around the stem, then install without issue. The tubing size will depend on hole diameter. Available at hobby shops and hardware stores.

Other issues?

Please contact us and we will see what solutions are available.