Do You Really Know Where The Name “redneck” Came About?

Battle of Blair Mountain
From August 24 to September 4, 1921, approximately seventy- five hundred (although some say as many as twenty thousand) West Virginia union miners and supporters led by Bill Blizzard, president of United MineWorkers of America, marched from union territory in Kanawha and northern Boone Counties to nonunion Logan County and fought a battle against a force of about twentyfive hundred men led by Logan County Sheriff Don Chafin. This conflict, known as the Miners’ March and Battle of Blair Mountain, was broken up by the intervention of more than two thousand federal troops.
prompted by the August 1, 1921, murder of Matewan Police Chief Sid Hatfield, who had emerged as the miners’ hero because of his role in the Matewan Massacre of 1920, preparations began for a second armed march. On August 7, five thousand miners and union supporters gathered on the capitol grounds in Charleston to hear Keeney and Mary Harris “Mother” Jones condemn Governor Ephraim F. Morgan for imposing martial law in Mingo County. Keeney ordered miners to arm themselves and await his call. On August 20, miners began to assemble at Marmet.
During this march the miners wore red hankerchiefs around their necks so that their comrades in arms would recognize each other.

either from working out in the sun alot and the back of the neck being exposed to the sun most often, but also ive been told that its because southerners would often drive trucks (back when they didnt have double cabs, and the back window would allow sun to shine in through it and shine on the exposed neck.

Yes I do know, just had to find the link to verify for you.
Many words commonly used in America today such as Hillbillies and Rednecks have their origins in our Scottish roots.
REDNECKS
The origins of this term Redneck are Scottish and refer to supporters of the National Covenant and The Solemn League and Covenant, or “Covenanters”, largely Lowland Presbyterians, many of whom would flee Scotland for Ulster (Northern Ireland) during persecutions by the British Crown. The Covenanters of 1638 and 1641 signed the documents that stated that Scotland desired the Presbyterian form of church government and would not accept the Church of England as its official state church.
Many Covenanters signed in their own blood and wore red pieces of cloth around their necks as distinctive insignia; hence the term “Red neck”, (rednecks) which became slang for a Scottish dissenter*. One Scottish immigrant, interviewed by the author, remembered a Presbyterian minister, one Dr. Coulter, in Glasgow in the 1940′s wearing a red clerical collar — is this symbolic of the “rednecks”?
Since many Ulster-Scottish settlers in America (especially the South) were Presbyterian, the term was applied to them, and then, later, their Southern descendants. One of the earliest examples of its use comes from 1830, when an author noted that “red-neck” was a “name bestowed upon the Presbyterians.” It makes you wonder if the originators of the ever-present “redneck” joke are aware of the term’s origins – Rednecks?
The term Hillbilly is also Scottish in origin.

When a white person’s skin burns on the places that are exposed to the sun and when they take their shirt off they have a red neck.
Also called a farmer’s tan.

I heard that all came with gold fiver and farmers down south. Because they worked on the fields or trying to find gold, the son was burning the skin on there neck. Neck or skin turned red of course. New name was born redneck.
I think something like that