The KL-430 is 12mm 4 pin. For use in kitchen cabinets. Connection hardware for such a thing is nonexistent. What can I do? By connection hardware is mean things like, cut-n-splice, span a gap, 90...

@Nickp001 KL430 is a 4 pin 12mm which seems to be a real odd ball. Where can I get supporting hardware (45/90 corners), tee-splitters, jumpers, etc.