{"product_id":"es-339-prewired-wiring-harness","title":"ES-339 Prewired Wiring Harness — Gibson \u0026 Epiphone","description":"\u003ch2 id=\"main-description\"\u003ePrewired Wiring Harness for the Gibson \u0026amp; Epiphone ES-339\u003c\/h2\u003e\n\u003cp\u003eThe ES-339 takes the ES-335's semi-hollow design — laminated top, back, and sides built around a solid maple center block — and puts it in a smaller body, scaled down closer to a Les Paul's footprint, while keeping the full 24.75\" scale length. The control cavity is still an open, routed pocket with no rear access panel, so all 4 pots, the switch, and the jack go in through the f-hole, exactly as they do on the 335. The change is that, with a smaller body, the f-hole opening is smaller on many ES-339s, especially newer Epiphone \"Inspired by Gibson\" models. Be sure to measure the f-hole size on your guitar against the f-hole minimum width specification shown below. \n  \nThis harness is built as a single complete prewired unit and tested on our workbench first, so what arrives at your door is a pre-spaced assembly you feed in and mount. Two volume controls, two tone controls, a 3-way pickup selector switch, wiring diagram, and installation instructions included.\u003c\/p\u003e\n\u003cp\u003eEvery ES-339 harness we build uses the same premium components as our other semi-hollow harnesses, selected for reliability and tonal performance, wired 50s-style so rolling back the volume knob keeps your top end intact instead of turning dull, with a tone control that stays smooth and usable across its whole range. If your ES-339 shipped with Gibson's factory \"Memphis Tone Circuit,\" this harness replaces it with the road-proven 50s wiring scheme using the time-tested point-to-point wiring instead of a printed circuit board.\u003c\/p\u003e\n\u003ch2\u003eChoose Your Tone Caps\u003c\/h2\u003e\n\u003ch3\u003ePaper-in-Oil (PIO) or Orange Drop\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCentralab\u003c\/strong\u003e \u003cstrong\u003ePaper-in-Oil\u003c\/strong\u003e (.033uF bridge, .015uF neck) is our Premium build — cleaner, warmer tone for jazz and blues playing, with a bit of bluesy grit when you dig in and improved sustain. Both are built for humbuckers. \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eOrange Drop\u003c\/strong\u003e (.022uF bridge, .022uF neck) is our Classic-series cap — modern-style tone with full dynamic range and a bright, distinct sound, a straightforward step up from the stock electronics most ES-339s ship with. \u003cbr\u003e\u003cbr\u003eSince both cap options wire in exactly the same way, swapping later is a cap change, not a rewire.\u003c\/p\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFour Bourns Pro Audio 500K potentiometers (coarse-spline, short shaft)\u003c\/li\u003e\n\u003cli\u003eTone capacitors — your choice: Orange Drop (.022uF bridge \/ .022uF neck) or Centralab Paper-in-Oil \/ PIO (.033uF bridge \/ .015uF neck)\u003c\/li\u003e\n\u003cli\u003eSwitchcraft or Centralab 3-way toggle switch, prewired with a black tip — gold-plated switch available as an upgrade\u003c\/li\u003e\n\u003cli\u003eSwitchcraft 1\/4-inch output jack\u003c\/li\u003e\n\u003cli\u003eVintage-style braided Gavitt 22 AWG push-back wire\u003c\/li\u003e\n\u003cli\u003eFully prewired harness assembly board, drilled to specs and tested before it ships\u003c\/li\u003e\n\u003cli\u003eWiring diagram and installation instructions included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications \u0026amp; Fitment\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFits the Gibson or Epiphone ES-339\u003c\/li\u003e\n\u003cli\u003eNewer ES-339 models — especially Epiphone's \"Inspired by Gibson\" line — often have a narrower f-hole than a standard ES-335. Measure yours against the f-hole minimum below before ordering; if it comes up short, \u003ca href=\"https:\/\/tonemanguitar.com\/pages\/contact\" rel=\"noopener noreferrer\" target=\"_blank\"\u003econtact us\u003c\/a\u003e — we have an option with a smaller-diameter potentiometer built for tighter openings.\u003c\/li\u003e\n\u003cli\u003eKnobs require an 18-tooth coarse-spline fit (replacement knobs sold separately)\u003c\/li\u003e\n\u003cli\u003eEach pot mounts through a 3\/8-inch control-cavity hole. Offshore-made units are often drilled for 5\/16-inch pots and will need to be reamed out to 3\/8 inch\u003c\/li\u003e\n\u003cli\u003eJack wire run is long enough to reach the edge of the body — 9\" total, which includes 3\" of extra allowance built in for guitars with the jack mounted at the end of the body\u003c\/li\u003e\n\u003cli\u003eNot sure what your guitar needs? Reach out through our \u003ca href=\"https:\/\/tonemanguitar.com\/pages\/contact\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eContact Us\u003c\/a\u003e page before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is the harness's own build spacing — the same assembly board serves the ES-335\/ES-339 family, so what varies guitar to guitar is your f-hole opening, not these numbers:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eMeasurement\u003c\/th\u003e\n\u003cth\u003eDistance\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume to volume\u003c\/td\u003e\n\u003ctd\u003e2.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTone to tone\u003c\/td\u003e\n\u003ctd\u003e2.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume to tone\u003c\/td\u003e\n\u003ctd\u003e2.75\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJack to switch (wire run)\u003c\/td\u003e\n\u003ctd\u003e6\" (plus the 3\" extra allowance noted above)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitch to neck volume\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eF-hole minimum width (at widest point, for harness feed-through)\u003c\/td\u003e\n\u003ctd\u003e1-1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eES-335 or ES-339 — Which Harness Do I Need?\u003c\/h2\u003e\n\u003cp\u003eBoth harnesses are built the same way on the same bench — same components, same 50s wiring, same PIO\/Orange Drop choice, same gold switch option. The only thing that changes is which product page matches your guitar. The fastest way to tell them apart is body size: an ES-339 is noticeably smaller and closer to a Les Paul's footprint, while an ES-335 has the larger, more traditional semi-hollow body — same 24.75\" scale on both, so it's not a neck thing, it's a body thing. Own a full-size ES-335, a Casino, or a Sheraton instead? \u003ca href=\"https:\/\/tonemanguitar.com\/products\/es-335-prewired-wiring-harness\"\u003eSee our ES-335 harness listing\u003c\/a\u003e. Still not sure which one you've got? \u003ca href=\"https:\/\/tonemanguitar.com\/pages\/contact\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eContact us\u003c\/a\u003e with your guitar's model and we'll point you to the right page.\u003c\/p\u003e\n\u003ch2\u003eShipping \u0026amp; Build Time\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e5–10 business days to build before it ships — every harness is custom-built to order, not pulled off a shelf\u003c\/li\u003e\n\u003cli\u003eIn-stock means we have the parts on hand to build yours\u003c\/li\u003e\n\u003cli\u003eShips to your USA front door for free\u003c\/li\u003e\n\u003cli\u003eTested on the bench before it leaves — every harness is 100% guaranteed, and I want you to be 100% satisfied\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this the same harness as your ES-335 listing?\u003c\/strong\u003e\u003cbr\u003eFunctionally, yes — same components, same 50s wiring, same cap and switch options. We split it into its own page because ES-339 owners search differently than ES-335 owners, and because the fitment notes (f-hole size especially) are different enough to call out on their own rather than bury in the 335 listing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy choose PIO versus Orange Drop capacitors?\u003c\/strong\u003e\u003cbr\u003eIt comes down to voicing, not quality — Centralab PIO leans warmer and cleaner for jazz and blues, with more sustain and grit when pushed. Orange Drop gives you a brighter, more modern sound with full dynamic range. Both are built for humbuckers and wire in identically.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the pickup selector switch part of the harness?\u003c\/strong\u003e\u003cbr\u003eYes — a Switchcraft or Centralab 3-way toggle, prewired with a black tip, comes on every harness. A gold-plated switch is available as an upgrade.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size knobs do I need?\u003c\/strong\u003e\u003cbr\u003eCoarse-spline, 18-tooth — we sell replacement knobs in that fit if yours don't match.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my Gibson Memphis ES-339?\u003c\/strong\u003e\u003cbr\u003eYes. If your Memphis ES-339 shipped with Gibson's factory \"Memphis Tone Circuit,\" this harness replaces it outright with true 50s-style wiring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy ES-339's f-hole looks small — will this still fit?\u003c\/strong\u003e\u003cbr\u003eMeasure it against the f-hole minimum in the spec table above. Newer Epiphone \"Inspired by Gibson\" ES-339s in particular often run narrower than a standard ES-335 f-hole. If yours measures under that minimum, contact us before ordering — we have a smaller-diameter pot option built for exactly this.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere's no back panel on my guitar — how does this actually go in?\u003c\/strong\u003e\u003cbr\u003eAs one piece. We build and test the whole harness on our bench first, then it feeds through the f-hole into your control cavity as a single assembly — see the Workbench Note below for the technique.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's the turnaround time?\u003c\/strong\u003e\u003cbr\u003e5–10 business days to build, then it ships free to any US address.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; align-items: center; gap: 20px; margin-bottom: 20px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0709\/3583\/8918\/files\/gary.jpg?v=1784479278\" alt=\"Gary Standerfer - Tone Man Guitar\" style=\"width: 100px; height: 100px; border-radius: 50%; object-fit: cover; border: 2px solid #e8e8e8; flex-shrink: 0;\"\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cstrong\u003eCheers,\u003cbr\u003eGary Standerfer \/ Tone Man Guitar\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- START WORKBENCH NOTE BLOCK --\u003e\n\u003cdiv\u003e\n\u003ch3 style=\"margin: 0 0 8px 0; font-weight: bold;\"\u003eWorkbench Note:\u003c\/h3\u003e\n\u003cp style=\"margin: 0;\"\u003eOn an ES-339, the f-hole is the whole game — more so than on a full-size 335. The body's scaled down closer to a Les Paul, which means less room to maneuver and, on a lot of newer models, a tighter opening to work with. Feed the components through one at a time, in order: whichever one ends up sitting nearest the f-hole goes in first, the jack goes in last, and give the wires a little slack rather than pulling them taut so nothing snags as each piece settles into place. Because this harness ships pre-built and pre-spaced as one assembly, you're guiding a finished unit into position, not routing loose parts and hoping they land right. Learn more about f-hole installation layouts by reading our \u003ca href=\"https:\/\/tonemanguitar.com\/blogs\/news\/es335-es339-hollowbody-guitar-wiring-harness-installation-guide\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eES-335\/ES-339 wiring harness installation guide\u003c\/a\u003e. Not sure what your guitar needs? Reach out through our \u003ca href=\"https:\/\/tonemanguitar.com\/pages\/contact\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eContact Us\u003c\/a\u003e page before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- END WORKBENCH NOTE BLOCK --\u003e","brand":"Tone Man Guitar","offers":[{"title":"Premium Harness with Paper-in-Oil (PIO) Caps","offer_id":46990260142278,"sku":null,"price":134.99,"currency_code":"USD","in_stock":true},{"title":"Premium Harness w\/ PIO Caps Gold-Plated Switch","offer_id":46990260175046,"sku":null,"price":159.99,"currency_code":"USD","in_stock":true},{"title":"Standard Harness with Orange Drop Caps","offer_id":46990260207814,"sku":null,"price":109.99,"currency_code":"USD","in_stock":false},{"title":"Standard w\/ Orange Drop Caps and Gold-Plated Switch","offer_id":46990260240582,"sku":null,"price":134.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/3583\/8918\/files\/ES335_PIO_fixed.jpg?v=1787848659","url":"https:\/\/tonemanguitar.com\/products\/es-339-prewired-wiring-harness","provider":"Tone Man Guitar","version":"1.0","type":"link"}