Painless Performance 10201 Classic-Plus Customizable Chassis Harness - GM Keyed Column - 28 Circuits

painless nailed it with this harness and wiring system. i installed the 28 circuit on my 1969 c10 no problem. will the install make you stop and think, will you scratch your head, will you second guess a couple of things, probably!! but everything you need is in that box. comes with extra bits and pieces, fuses, and the book is very easy to sort out and make sense of. i recommend this product

Big fat instruction book. All wires labeled individually. Easy install over several days.

everything is marked way to install

It wouldn't fit and wasn't allowed to return. For an intricate fitting item returns should be more flexible.

I bought this particular harness (10201) for the extra circuits, for future upgrades. Only one wire is given to power the wipers. Had to use the stock wiper harness. Same went for the heater (no a/c in my ride). I’ve never replaced a complete wiring harness before. It’s installed but not tested. Still working on the door triggered dome light and grounds. I highly recommend grounding everything! Still waiting on grommets, wrap and looms. I also recommend using the new style waterproof connectors (like in the new cars). If you’ve never wired a car before, there will be a learning curve and lots of time spent thinking about the length of wire needed and what connectors to use. The process of planning and execution is very time consuming and will test your patience. I’m happy with the product, would recommend.