Heat shrink can unfortunately hide dry joints, so check that the wires all make good solder connections to the pot tags etc. When i was doing the SG, one of the tone pot wires was poking through the hole in a pot tag, but the heatshrink was also just poking through the hole and stopping a connection. Was a matter of seconds* to correct this and get everything working.


*Anything is just a matter of seconds, but in this case it was about 60, rather than 100,000.