Ruggedly well built with suitable wire of appropriate guage, insulation heat shrink and vinyl shielding. Deutsch style connectors and very positive and sturdy feeling switch. Does not come with taps or provisions to tie into a high beam trigger source, purchasers who wish to go this route will need to add an additional 30A relay or relays depending on their application. If bumper mounting or installing in a hood/bonnet pod, installers will want to de-pin and shorten the leads to each lamp as this harness is very generously sized to accommodate rooftop installation.The missing feature for my specific application was a disappointment, but the quality construction is of the same caliber that I'd have built out of my shop - which nobody could have gotten me to do for $100. Great idea to buy even if you end up hacking it apart to suit your needs.