Let’s build one of my favorite DIY guitar tools that I use daily in my shop. I’ll show you two versions and then explain how to put them into action.

Welcome back to Mod Garage. After receiving numerous requests to show more DIY tools for guitarists, today we’ll explore one of my favorites. For years I’ve used this one in the shop daily and I’m sure you’ll love it. It’s cheap and easy to build, but very effective for analyzing circuits of electric guitars and basses without opening the electronic compartment or lifting the pickguard. It’s a kind of adaptor or extension to measure a pickup’s DC resistance (DCR) from outside the guitar. After building one, we’ll discuss how to interpret the measurements.

The DCR of a pickup is by far the most common parameter you can read when reading pickup descriptions and often it’s used as an indicator of the output. The reason for this is that it’s easy to measure, but, sadly, it doesn’t tell us anything about a pickup’s output nor its tone. To quote pickup designer Bill Lawrence: “DC resistance tells you as much about a pickup’s tone and output as the shoe size tells you about a person’s intelligence.”

I’ve written about DCR as a pickup parameter in detail and you can read about it in “Mod Garage: Demystifying DCR.”

DCR is not a primary parameter in pickup design. It’s simply the result of the type and gauge of the pickup’s wire, the number of turns, and other parameters like the winding pattern, etc. But it isn’t completely useless, and we can use it as a good reference point for analyzing pickups both inside and outside a guitar or bass circuit. All you need for this is a digital multimeter (DMM). You don’t need an expensive calibrated precision DMM—any entry level DMM will work. You can get a simple digital DMM for $10, but if you want to invest in a better device, it can’t harm.

The easiest way to analyze a pickup is outside a circuit. Simply set your DMM to ohm and connect the two pickup leads to your DMM. If your DMM doesn’t have an auto-range function, set it to 20k ohm. Now you’ll get the DCR reading for your pickup. You can compare it to the factory specs of your pickup and it should be close. If your DMM shows “infinite” or “overload,” you know the pickup wire is broken. Let’s say your pickup should read 7k ohm, but yours reads around 2-3k ohm. Your pickup likely has a short circuit somewhere in the winding. Used this way, the DCR is always good to quickly check if a pickup is alive or not.

To quickly analyze a guitar or bass circuit with one or more pickups, you first need to build the DIY adaptor tool this column is about. There are two different versions, and you don’t need much for this:

So, heat up your soldering iron and let’s get to building version #1.

Version #2 is built the same way, but, instead of alligator clips, you solder a 4 mm banana plug to each end of the two wires, if possible, also in black and red. The two wires should be long enough that can place your DMM and/or scope at some distance from the guitar. In Photo 2, you can see version #1 on the top and version #2 on the bottom.

The difference between the two versions is that with version #1 you put the plug into the output jack of the guitar, connecting the two probes of your DMM to the alligator clips: the black probe of the DMM goes to ground (black wire) and the red probe goes to hot (red wire) as seen in Photo 3. With version #2, you need to remove the two probes from your DMM, plugging the two banana plugs directly into your DMM or your scope, also seen in Photo 3.

Both versions work equally well. Version #2 is just easier to operate when you also want to use the adaptor for a scope.

For a quick check, you can also directly touch the hot and ground terminals with the probes of your DMM, but you need both hands or a second person for this if you want to play around with the controls or the pickup-selector switch.

Now we can easily check four things with this tool, assuming everything is connected the way it should be and your DMM is set to ohm and auto-range or the 20k ohm scale if your DMM doesn’t have an auto-range mode:

There is a lot to discover from just the outside of any guitar or bass. So, now let’s see what we can measure from outside the instrument starting with a Telecaster with a 4-way switch. The readings in all examples are the readings I received with guitars I had in the shop, but they can be different in your instruments:

The readings for both pickups are within the factory specs and are in a typical range for a vintage-flavored Telecaster pickup set. With a reading of 3.18k ohm for both pickups together, you know that both pickups are in parallel. With the reading of 12.30k ohm, you know that both pickups are in series with each other.

Here is the simplified math behind these readings:

Now let’s repeat this with a standard Stratocaster:

All three pickups are within the factory specs of this Strat. We have a slightly hotter bridge and two vintage-flavored pickups. The two in-between positions are in parallel.

Lastly, let’s try a vintage PAF-loaded Les Paul:

Both PAFs have the typical vintage DCR and are in parallel in the middle position.

That’s it. Next month we’ll take a deeper look at changing wires on pickups, which is something I’ve been asked about a lot, so stay tuned!

Take it from Judas Priest and follow your dreams. Even if that includes golfing.

If you play guitar, you’re a musician. And if you also write your own music, you’re an artist. It doesn’t have anything to do with how much money you make or how famous you are. We live in a time that honors that title, which is a huge leap for our society. Since I was a kid, I’d heard tales of handwringing parents who, when confronted with their child’s desire to become an artist of any kind, advised against it—pleading with their children to get a “proper” education, or at least have a backup plan. Painters, poets, sculptors, and writers were often portrayed as starving, wretched outcasts who died penniless. The exceptions who succeeded financially were few, and not usually musicians.

So how did the perception of an artist’s life go from certain squalor to being a career path? My guess is that as the visibility and economics of artistry blossomed, artists took their careers more seriously, and the public’s perception of them shifted in kind.

The poet Arthur Rimbaud, admired by the likes of Jim Morrison and Bob Dylan, famously spoke of making himself a seer by breaking moral rules and societal norms, fostering a mental state in which he could create work that inspired his audience. This sort of idealized debauchery was a template for artists centuries before Charlie Parker or Hank Williams. Artists often say that they are driven to create, and of this I have no doubt. But there are those who live “the life” and those who also see art as a profession—and know the difference.

An illustration of this is the mythology of the heavy metal life. I first began working with the members of Judas Priest in the early 1980s. Despite more than a decade of playing music professionally and dealing with touring bands of all stripes, I approached my first meeting with them with some trepidation. Imagine my surprise when I was greeted by guitarists K.K. Downing and Glenn Tipton attired in full costume—golf shirts and pastel trousers. As if in a parallel universe, these monsters of rock asked politely if I could secure a tee time for them at a local golf club. Later, when designing guitars for their Fuel for Life tour, I met with the band along with their set and costume designers to coordinate the group’s stage look. We pored over colorful leather swatches and dozens of metal stud samples. This is not to say that the band didn’t love their music, but that they realized the first word in the phrase show business is … well, you get the picture.

Many great artists are not recognized or remunerated in their own lifetime. But today, enough creators have become wealthy and fawned upon by the media, helping to offset the images of Rimbaud, William Faulkner, or Jackson Pollock surrounded by empty whiskey bottles. Similarly, as painters, writers, and musicians have become more famous for their net worth than their alcohol and drug consumption, the artist’s career choice has taken its place besides professional athletes and business entrepreneurs. Of course, the modern-day image of sober and respectable musicians like Keith Richards and his writing partner, Sir Mick, hasn’t hurt the shift in attitudes towards musicians. It’s not rare to hear chefs, actors, and quarterbacks referred to as rock stars. It wasn’t that long ago that athletes and musicians were in opposite political and lifestyle corners.

The push to legalize cannabis in America is another sign that previously taboo behaviors are now acceptably mainstream. Coded drug references used to be the musician’s bailiwick, but that too has gone mainstream. In 1968, Steppenwolf’s John Kay sang “the dealer is a man with the love grass in his hand,” but now you can just walk into the dispensary and use your Apple Pay. This takes the edge off a wide swath of the outlaw lyric pool.

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