Process for soldering two LED Strip Lights together

(I) Use scissors to cut on printed points across the strip.

(II) Remove the 3M adhesive from the bottom side of one of the strips to expose the solder pads.
Put this strip that you had removed the 3M adhesive on the top when soldered.

(III) Tin the solder pads on the other strip, placed beneath one of strip (3M adhesive removed).

(IV) Align the non-tinned top strip that 3M adhesive removed over the newly tinned pads, melting two soldering joints together.
The polarity of both strips must be in line with each other.

V) Ensure a solid connection, connect newly soldered led strip to a proper power supply and test.