Introduction<\/h2>\n\n \n\n\n\n\n![\"es339](\"https:\/\/biafax.it\/wp-content\/uploads\/2026\/06\/es339_cablaggio_jack_schema_img_01-768x576.webp\")
<\/a>![\"es339](\"https:\/\/biafax.it\/wp-content\/uploads\/2026\/06\/es339_cablaggio_corpo_elettronica_img_01-768x576.webp\")
<\/a><\/div>\n\n\n\n\n\n \n\n\n\n\n\n\n\nThis classic four-pot, 3-way toggle switch design drives two passive humbuckers independently.8 Each pickup has its own volume and tone control, allowing the guitarist to blend the levels and frequency responses of both pickups when the switch is in the center position.8 <\/p>\n\n
Wiring diagram<\/h2>\n\n\n Advertising<\/span><\/div>\n \n ![\"STRICH](\"https:\/\/m.media-amazon.com\/images\/I\/81BF-auGNiL._AC_UL320_.jpg\")
\n <\/div>\n \n STRICH DIY Electric Guitar Kit, LP Style Mahogany Body & Maple Neck Guitar with HH Pickups, Easy to Assemble Kit with All Parts Included \u2013 Build Your Own Electric Guitar SLP-D30<\/div>\n \u2605 4.1<\/span> (77 reviews)<\/div>\n \n See on Amazon<\/a>\n <\/div>\n ![\"\"](\"https:\/\/biafax.it\/en\/pixel\/affiliate\/272.gif\")
\n<\/div>\n\n\n![\"Les](\"https:\/\/biafax.it\/wp-content\/uploads\/2026\/06\/03_les_paul_hh.svg\")
<\/figure>\nDownload the SVG diagram and use it as a reference while soldering. The star ground is the central point: all ground wires must converge there.<\/p>\n\n
How to read the diagram<\/h2>\n
The circuit uses two passive humbucker pickups, four long-stemmed logarithmic potentiometers to pass through the wooden top, two capacitors, and a 3-way toggle switch with three output terminals.3 Viewing the back of the electronics cavity from below, the four potentiometers are arranged in a quadrilateral: the upper two control the volumes (Bridge Volume on the right, Neck Volume on the left), while the lower two control the tones.8 Orienting the terminals downward: on the Volumes, the hot leads of the pickups are soldered to Terminal 1.4 Terminal 2 (center) carries the output signal to the toggle switch.7 Terminal 3 (right) is folded over and soldered to ground on the top.4 Capacitors connect Terminal 1 of each Volume to Terminal 2 of the respective Tone.8 <\/p>\n\n
Practical steps<\/h2>\n\n- Prepare the components and check the values of potentiometers and capacitors.<\/li>\n
- I soldered the hot wires following the diagram, avoiding unnecessary jumpers.<\/li>\n
- Connect all the masses to the indicated star point.<\/li>\n
- Check the continuity between the bridge, jack and potentiometer covers with a multimeter.<\/li>\n
- Test the instrument and fix any buzzing.<\/li>\n<\/ul>\n\n
Tips to avoid buzzing<\/h2>\n
Avoid the ground loop<\/strong>If the potentiometers are on a common metal shield, do not solder ground wires between their caps. Use an open "C" or "horseshoe" path and connect each ground to the star center. For more information on modifications, see also guitar modification guide<\/a>.<\/p>\n\nFAQ<\/h2>\n
Which potentiometers should I use?<\/strong>
It depends on the pickup: single-coil generally 250k, humbucker 500k, active 25k.<\/p>\nCan I use a different capacitor?<\/strong>
Yes, but the value changes the cutoff frequency of the tone. Higher = darker sound.<\/p>\n\n\n\n\n\nSee also<\/h3>\n
![\"es339](\"https:\/\/biafax.it\/wp-content\/uploads\/2026\/06\/es339_cablaggio_jack_schema_img_01.webp\")
<\/a>![\"es339](\"https:\/\/biafax.it\/wp-content\/uploads\/2026\/06\/es339_cablaggio_corpo_elettronica_img_01.webp\")
<\/a><\/div>\n\n\n\n\n\n \n\n\n\n\n\n\n\nThis classic four-pot, 3-way toggle switch design drives two passive humbuckers independently.8 Each pickup has its own volume and tone control, allowing the guitarist to blend the levels and frequency responses of both pickups when the switch is in the center position.8 <\/p>\n\n
Wiring diagram<\/h2>\n\n\n Advertising<\/span><\/div>\n \n \n <\/div>\n \n STRICH DIY Electric Guitar Kit, LP Style Mahogany Body & Maple Neck Guitar with HH Pickups, Easy to Assemble Kit with All Parts Included \u2013 Build Your Own Electric Guitar SLP-D30<\/div>\n \u2605 4.1<\/span> (77 reviews)<\/div>\n \n See on Amazon<\/a>\n <\/div>\n \n<\/div>\n\n\n<\/figure>\nDownload the SVG diagram and use it as a reference while soldering. The star ground is the central point: all ground wires must converge there.<\/p>\n\n
How to read the diagram<\/h2>\n
The circuit uses two passive humbucker pickups, four long-stemmed logarithmic potentiometers to pass through the wooden top, two capacitors, and a 3-way toggle switch with three output terminals.3 Viewing the back of the electronics cavity from below, the four potentiometers are arranged in a quadrilateral: the upper two control the volumes (Bridge Volume on the right, Neck Volume on the left), while the lower two control the tones.8 Orienting the terminals downward: on the Volumes, the hot leads of the pickups are soldered to Terminal 1.4 Terminal 2 (center) carries the output signal to the toggle switch.7 Terminal 3 (right) is folded over and soldered to ground on the top.4 Capacitors connect Terminal 1 of each Volume to Terminal 2 of the respective Tone.8 <\/p>\n\n
Practical steps<\/h2>\n\n- Prepare the components and check the values of potentiometers and capacitors.<\/li>\n
- I soldered the hot wires following the diagram, avoiding unnecessary jumpers.<\/li>\n
- Connect all the masses to the indicated star point.<\/li>\n
- Check the continuity between the bridge, jack and potentiometer covers with a multimeter.<\/li>\n
- Test the instrument and fix any buzzing.<\/li>\n<\/ul>\n\n
Tips to avoid buzzing<\/h2>\n
Avoid the ground loop<\/strong>If the potentiometers are on a common metal shield, do not solder ground wires between their caps. Use an open "C" or "horseshoe" path and connect each ground to the star center. For more information on modifications, see also guitar modification guide<\/a>.<\/p>\n\nFAQ<\/h2>\n
Which potentiometers should I use?<\/strong>
It depends on the pickup: single-coil generally 250k, humbucker 500k, active 25k.<\/p>\nCan I use a different capacitor?<\/strong>
Yes, but the value changes the cutoff frequency of the tone. Higher = darker sound.<\/p>\n\n\n\n\n\nSee also<\/h3>\n
\n <\/div>\n \n<\/div>\n\n\n<\/figure>\nDownload the SVG diagram and use it as a reference while soldering. The star ground is the central point: all ground wires must converge there.<\/p>\n\n
How to read the diagram<\/h2>\n
The circuit uses two passive humbucker pickups, four long-stemmed logarithmic potentiometers to pass through the wooden top, two capacitors, and a 3-way toggle switch with three output terminals.3 Viewing the back of the electronics cavity from below, the four potentiometers are arranged in a quadrilateral: the upper two control the volumes (Bridge Volume on the right, Neck Volume on the left), while the lower two control the tones.8 Orienting the terminals downward: on the Volumes, the hot leads of the pickups are soldered to Terminal 1.4 Terminal 2 (center) carries the output signal to the toggle switch.7 Terminal 3 (right) is folded over and soldered to ground on the top.4 Capacitors connect Terminal 1 of each Volume to Terminal 2 of the respective Tone.8 <\/p>\n\n
Practical steps<\/h2>\n\n- Prepare the components and check the values of potentiometers and capacitors.<\/li>\n
- I soldered the hot wires following the diagram, avoiding unnecessary jumpers.<\/li>\n
- Connect all the masses to the indicated star point.<\/li>\n
- Check the continuity between the bridge, jack and potentiometer covers with a multimeter.<\/li>\n
- Test the instrument and fix any buzzing.<\/li>\n<\/ul>\n\n
Tips to avoid buzzing<\/h2>\n
Avoid the ground loop<\/strong>If the potentiometers are on a common metal shield, do not solder ground wires between their caps. Use an open "C" or "horseshoe" path and connect each ground to the star center. For more information on modifications, see also guitar modification guide<\/a>.<\/p>\n\nFAQ<\/h2>\n
Which potentiometers should I use?<\/strong>
It depends on the pickup: single-coil generally 250k, humbucker 500k, active 25k.<\/p>\nCan I use a different capacitor?<\/strong>
Yes, but the value changes the cutoff frequency of the tone. Higher = darker sound.<\/p>\n\n\n\n\n\nSee also<\/h3>\n
Tips to avoid buzzing<\/h2>\n
Avoid the ground loop<\/strong>If the potentiometers are on a common metal shield, do not solder ground wires between their caps. Use an open "C" or "horseshoe" path and connect each ground to the star center. For more information on modifications, see also guitar modification guide<\/a>.<\/p>\n\n Which potentiometers should I use?<\/strong> Can I use a different capacitor?<\/strong>FAQ<\/h2>\n
It depends on the pickup: single-coil generally 250k, humbucker 500k, active 25k.<\/p>\n
Yes, but the value changes the cutoff frequency of the tone. Higher = darker sound.<\/p>\n\n\n\n\n\nSee also<\/h3>\n