Our range of led accessories are here to help you make the most of your led strips, as you may know all our led strips can be cut to size usually every 3 leds or 5cm, Once the led have been cut you would have lost the red & black wire that is at the start of the strip know as "tails". You have 2 options if you want to use the remaining cut of section 1. Solder to the copper pads on the led pcb (remove the PU coating in the case of waterproof leds). 2. Us the snap on connector single or dual 3528 (8mm) or 5050/5630 (10mm), again for the PU coated led strip you need to remove the coating to expose the copper pads, open the connector and slide the led pcb underneath the terminals to make elctrical contact. For the RGB use the RGB connector (4 way). To bridge gap or go around corners at 90 deg use a dual connector if you need the wire between the strips to be longer cut connector in half and use cable to bridge the gap.