I learned a trick back in my electric guitar days that has really come in handy when I install a pickup in my acoustic guitar and I’ve often thought of sharing it, so today I shot a video of the procedure. My video was totally off the cuff with no script, so I forgot to warn about drilling the end pin jack hole, and I’d like to do that now: most of a pickup installation is easily reversible and/or inconspicuous, but it’s all too easy to do real damage to your guitar when enlarging or drilling the hole through the tail block. It’s not hard or dangerous if you know what you’re doing and you have the right tools but it’s not something to try if you don’t. (Now how would I know that??)

The trick involves using a piece of wire or a guitar string to pull the jack into place. All the jacks I’ve seen have hole drilled through the jack at right angles to the plug, and this little detail is a big help in the installation process. Here’s a picture of the end pin jack showing the main body of the jack, the nut and washer that hold the jack from the outside, and the threaded strap button.

Closeup of an end pin jack showing the handy little hole

The larger threaded section needs to be adjusted so it is very slightly shorter than the depth of the tail block, the block of wood inside the guitar. I bend a sharp right angle in the end of the wire and stick that into the end pin jack hole, let it catch on the tail block and use that to measure the depth.

A simple piece of wire measures the end block

If the length here is too great the outer nut will not apply any pressure to the wood and the jack will spin – this is bad. If the length is too short we won’t be able to get the outer nut tightened – this is bad. I usually expect a couple of adjustments to get it just right.

Here’s a video of the complete process:

Have fun and save a few bucks installing your pickup yourself, but just remember, don’t try to drill out that end pin hole if you don’t know what you’re doing or don’t have the right tools.