Harmony Guitars is an American guitar company that started sometime in the early 20th Century, and were known for making good quality but inexpensive instruments.  By 1967, the company folded in America, and was sold to off-shore Asian firms, and built by Japanese/Korean/Taiwanese/Chinese guitar "Building Houses" such as Yako, Saehan, Matsamoku, and others.

Below is a list of Harmony Guitar Models from 1973-2021.  Click on the picture for more information, history, and whatnot on the model (that is if I've built a page for it yet).  Hopefully this will help people in identifying their Asian-built - post-USA Harmony guitar.

This was the 2001-2010 version of the Harmony H-804 sold mostly through E-bay, Amazon, and other online retailers.  This guitar - while very similar to the H-804, is very different.  Slab body (no arm contour), 2 single coil pickups, 1 volume, 1 tone, no selector - STAMPED tailpiece and height adjustable bridge (with only a single slot per string).  Swimming pool route, standard Strat-Sized neck with a baked or stained fingerboard and regular budget tuners and no zero fret.  Shown here is a 2004 Harmony 2183 like mine was before it was modified.

HISTORY Of the 801/802/803/804/805/704/218x
Wiring Diagram for the 218x Models
Early vibrato equipped version of the Teisco Tulip body with anti-foil pickups.  Sort of like a deluxe version of the H-802 with proper neck/bridge pickup placement and a boxier body design.  Very likely it may have been an early deluxe version of the H-802 based on the pickups and body design. 

HISTORY of the 801/802/803/804/805/704/218x
Wiring Diagram for the Harmony H802 (likely the same)
A Fender Lead II copy built sometime in the late 70's or early 1980's.  The Fender Lead was a replacement guitar for the mid-level Fender Mustang in 1978, with some endorsement/design input by Rick Derringer and Elliot Easton of The Cars or so I've read.  Harmony's version is clearly budget using the darker cherry finish used on their Les Paul and Flying V copies, a bit oversized pickguard, and what appears to be an H-802 (gibson scale) neck.
H666 or V666
This is probably the best known Flying V copy but it appears that there is some difficulty in figuring out which one exactly is the real one.  I have verified the example to the right as having an H666 neckplate on some examples on Reverb - which has a stop tailpiece, Tune-O-Matic, 2 humbuckers, standard Gibson Flying V style wiring, and a 24.75" Gibson scale neck complete with the arrow headstock of an actual Flying V.  However, it seems Harmony changed makers periodically and so some of these I have seen with the same Locking vibrato system as the H818/819, a Kahler clone, or a regular Stratocaster vibrato similar to some Arbor/Memphis/Hondo copies - so they may have  been using Samick for awhile.
A shortscale 30.5" scale bass guitar.  It initially started off as a bass-version of the H-802 but very different from the H-801 bass introduced in the early 70's - likely making this a model that started toward the end of the 70's when quality started to decline a little, and fancy features like binding, rosewood boards, and binding went by the wayside.  Sometime by the mid 1980's it appears they changed the model to be a shortscale Precision Bass copy, probably to improve sales of the model.
Harmony's Fender Stratocaster copy.  The earliest examples appear to be made by Matsamoku, with later ones being built by Samick in the same factory as the Memphis 302 and Kramer KS400 - in which the body is pretty much the same assembly - but the neck is different (Memphis had a Jackson style neck, while Kramer had a pointy headstock, and the Harmony had a traditional neck). The earliest models came around circa 1978 and had no vibrato, and likely were just called the "H-80".  The "T" came in the early 1980's.  These guitars came in Sunburst the most often - especially the later Samick built models - but also came in white, desert tan, candy apple red, black, dakota red, and vintage white.
The H-801 is a single pickup student guitar from the early-mid 1970's with roots beckoning back to the "Teisco Tulip" from the 1960's.  It has a single "Anti-Foil Pickup in the neck poostiion, 1 volume, 1 tone, 24.75" Scale bleached mahogany neck, height adjustable bridge, and a cast tailpiece. The 801 does not seem to have hung around as long as the 802 - possibly lasting as far as 1982.
The H-802 is the two pickup version of the above.  The pickguard is a little bigger, it has a neck and middle pickup, and 2 on/off switches  for each pickup.  Usually the H802 is seen in sunburst, though ti also came in red, black, and for a short time in the late 1970's, a blueburst finish.  The H-802 saw many changes in it's lifetime, with the earliest models seeming quite extravagant for a beginner's guitar - having 3 ply pickguards including toritishell, bound necks, 22 frets, and pickup switching.  By the mid 1980's, the binding, fancier color options, and multiple color pickguards were gone.  It's possible there's some overlap with the H-803 as I have seen some 802's minus the switches too very late in production.  My proof that the 802 lasted until at least 1987 is the kid's TV Game Show "I'm Telling" where the host has an H802 draped over his podium as one of the prizes.
The H803 is an updated version of the Harmony H-802 released in the late 1980's - circa 87'/88'.  It differs from the 802 in that it has a pointy headstock neck like a 80's metal guitar, 2 single coil strat type pickups, and no way of switching pickups - both are on full time.  These are most often seen in black, though white is another color seen a lot.  It would make sense that Harmony would make this modification to their guitars around this time being as hair-metal was in full swing and most of those bands were using guitars with pointy headstocks (Kramer, Charvel, Jackson, B.C. Rich...etc..).  However, it was really like slapping a Charvel neck on a Teisco Tulip and makes little sense from a musical standpoint or an image standpoint.
Around 1989-1990 Harmony updated the H-80x models to this model which features a 25.5" scale neck, 22, later 21 frets, the traditional Harmony six-on-a-side headstock, This model continued to be produced as the Harmony "Beginner's Electric Guitar" and the Rogue Student Guitar (1999-2001) until 2001 when manufacturers changed yet again and the 218x series was released.These were usually bought from the J.C. Penney wishbook catalogs through the 1990's and at one time there were quite a few of them out there making them quite desirable for modifications.
A flying V Version of the H-803/804 released sometime in the 1980's.  It has 2 angled strat-type pickups, a slab flying V body, 3-way switch, and a stoptail tailpiece.  It's basically a budget version of hte H/V666 aimed at beginners and people who could not afford the full featured version.  They also seem to be a bit uncommon as I have not seen very many of these turn up online.
Gibson Explorer style guitar with 3 active pickups powere dby a 9volt battery, 2 point single locking vibrato system.  Most often these are seen in black with a red pinstripe around the perimeter of the body.  You see this version a little less as often than the version below which seems like it might have been a more inexpensive version.  It has 1 volume, 2 tone, and 3 toggle switches to turn the pickups on and off.
Gibson Explorer style guitar with 2 passive pickups, 2 volume, 1 tone, 3-way switch, as well as the same locking system as the 818.  Most often seen in black with red pinstripe though a blueburst model may have been made at some point.  It's pretty obvious this version was based on the Gibson Explorer 84' models - similar to the one(s) James Hetfield was using in the mid 1980's given the control layout.  These also came with that odd locking vibrato system I've only seen on budget Asian guitars from the 80's.
Les Paul Copy, bound body, bound neck, block inlays, bolt-on neck, 2 humbuckers, 2 volumes, 2 tones, 3-weay switch.  Came in Silverburst, sunburst, sienna sunburst, and black.  It seems they came with both open coil and cover-equipped humbucker pickups and are one of the more sought after vintage Asian Harmony guitars from the 1970's-1990's. 
Bass guitar that looks sort of like a cross between a Mustang and a Gibson ripper Bass.  Very likely this model started sometime in the late 1970's and carried on until about 1987 or so as I was seeing this in both J.C. Penney and Sears catalogs from around that time for sale.  Most often these are seen in sunburst or black, so I'm figuring the example to the left is an older model given the color, either that or a refinish.
Harmony Superstrat
This unknown Harmony Superstrat turned up on Reverb, and I think someone actually e-mailed me to inquire about it.  IT appears that it may have been built in the same factory as the Carlo Robelli Brian-Mooore Style guitars from the late 1990's given the body shape, control configuration, and routing, except the Carlo Robellis had square cut wings that were deeper.  The neck is also a twin octave (24 fret) neck and it has a reverse headstock.  Likely this was a very short-lived model.