1961 Gibson 335.
Before: This is a 61s Gibson 335 with a set of “John Birch” pickups that the owner wanted replaced back to standard PAF’s. The grounding wire needed to be routed properly through the tremolo unit to ensure proper grounding especially as the bridge unit contains plastic saddles.
The electrics in most semi-solid guitars are removed through the access hole under the bridge pickup. Occasionally they may be removed through the f-holes.
When installing the brand new pickups straight out of the box, the bridge pickup had no output. On close inspection, having removed the pickup cover, it was obvious where the problem was as the ground wire had come away from the casing.
Finally the guitar with the new pickups installed and ground wire not visible.