Though the process is nearly the same, in most cases EZ Wiring manufactures the aftermarket harness I most often use. EZ Wiring kits are offered in a GM color-coded format that is easy to get used to. Having done so many over the years, I can sort them out by color and not so much by the words printed on the wires. Though, the names of the wires printed on each one makes the job so much simpler. A booklet is also included that has the popular Ford, GM, and Chrysler charging and turn signal circuits drawn out as well as basic light, ignition, and dash circuits and some helpful hints.