BYOC Spring Reverb Instructions Manual page 14

Step 8: Add wires to the IN, OUT, RING, and two Ground eyelets. Start by cutting four
2.5" pieces of wire, and one 1.5" piece. Strip 1/4" off each end and tin the ends. Tinning
means to apply some solder to the stripped ends of the wires. This keeps the strands from
fraying and primes the wire for soldering. Solder a 2.5" piece of wire to each of the IN,
OUT, and Ground eyelets on the PCB. Solder the 1.5" piece to RING eyelet on the PCB.
Load the wires in from the top and solder on the bottom of the PCB.