Top positive review
Quality harness. I replaced the switch to a proper fitting switch for my 2018 Tacoma TRD DCSB 4x4
Reviewed in the United States on March 8, 2020
The harness is quality and lengths were long enough for my 2018 Toyota Tacoma.
Changes I made included at least 2 things... 1) I snipped off the spade lugs for the cable end to connect to LED light bar and replaced with a waterproof connector. 2) replaced the included rocker switch with a different aftermarket switch designed specifically to fit my Taco because the rocker which came with the harness was too large to fit late model Toyota switch openings.
The relay seems to be a quality product.
The pins on the 3-pin molex blug between harness and switch were easy enough to push out of connector in order to pull the harness through the firewall and then to reinsert back into the connector once cable is run into the cab under dash. i then butt spliced the wires on the switch side of the molex to my new switch after tossing the original rocker switch.
I mounted the relay onto the driver side bulkhead using the existing factory ground clip which is located directly adjacent to the battery. In that location, the cable from relay to molex connetor for the switch at dash was just long enough. had it been a 6" shorter it would have been not long enough and I would have had to move the relay mounting spot in that direction to help with the reach to dash. But there wasn't much room to move if I had to, and so I recommend they add a foot more of cable to the switch side and a foot less from the light bar side (which had PLENTY of extra cable length).
The other cable run from relay to the light bar is what you will have plenty of left over cable for. Since I was snipping off the pre-installed spade connectors to replace with a waterproof connector, that gave me opportunity to also trim some of the excess cable up at the light bar at the bumper.
The ring terminals on the cable of the harness for pos and neg at batter are way oversized, especially for a typical bolt of the negative terminal but of course it still works once you clamp at least part of the ring. I considered snipping the ring terminal off and recrimping one of correct size onto the cable but this still works so I left it alone.