I bought a Painless harness for my panel truck. It was an 18 circuit job, that was specifically for truck applications......
meaning it had much longer wires to the front lighting and tail section. Tail section had provisions for backup lights, electric
fuel pump, gas gauge , aux . lighting, etc. Your flatbed is probably a bit longer, but I ended up cutting a LOT of wire when
trimmed to my application. Give them a call to ask exact length.....
They make a quality product, in my opinion.
