Under Cabinet Lighting

Good morning again,
First of all, thanks in advance for your effort to read and help answering my questions.
I am trying to install under cabinet lightings (no transformer), and I would like to have a switch that controls 3 cabinet lightings. Offcourse, each of these cabinet lightings have their on-off switch, but I am thinking to have an additional light switch such that on just a flip of this control switch, all 3 lights turn on or off instantly.
The challenge here is, all these under cabinet lighting have short wiring distance of less than 5 feet. To extend them, it will mean either finding the right extension wires (hard to find as some of lighting fixtures have special connecting heads) OR I will break open the cases of cabinet lightings to replace the existing wire with new 14 size wire. The later case concern me with non-compliant with wiring code as I am modifying the product wiring.
Simply put, I am looking for easily extensible cabinet lightings to extend the wiring distance up to 10 feet, to my junction box or switch. Any recommendation or recommended product in Lowes and Home Depot ?
Thanks! Shawn
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.