Lighting & Design buy J & K Electric Supply Co., a well-established lighting center and showroom, has been in the lighting and electrical business since 1973. With over 3,000 fixtures on display, we have the best selection of lighting. We would like to take this opportunity to thank our loyal customers and to welcome new customers by offering the following coupon. If you have never been to Lighting & Design by J & K Electric Supply Co., you don't know what you have been missing! Our Lighting center is located in Johnston, Rhode Island just a short drive from Massachusetts or Connecticut. Call us today!