Now that I have the new Centech harness in hand and laid it out and such, I'm finding that I made a good choice. The harness is laid out well, as is the fuse box and connectors. Everything is marked clearly right on the wire as to where it goes. Haven't had any issues looking at it and getting it positioned for hookup. Just a few things I'll note for you.
1. The rear section is using really nice watertight connectors. That means that you will need to change the connectors that are on your original tail lights. It's an upgrade for sure. Not a big deal.
2. There seems to be plenty of extra length on the wires in the engine compartment. That's not a big deal, you'll just trim them down. They ran the wires all to the end and some need to be poking out of the sheathing midway so they get to the temp sensor and oil sensor easier. Just cut open a little tape and slide the wire up around the plastic sheathing, and retape. No issue.
3. The only critique I have is the through-firewall connector. It does not match the square that is original to the firewall, it is round. They supply a stainless cover that you can screw into the firewall and then screw this connector through it...but it's flimsy. I ended up making my own out of a 4x4 piece of 1/8" thick steel that I blasted and coated with POR15. I drilled the 4 corners and matched 4 holes to center it on the square and used a 2" holesaw for the through hole for the connector. I put some silicon on and let it setup and then I bolted it through. I didn't want to use screws here as I felt I wanted it to be water tight and solid...overkill maybe, but it will never be an issue based on what I did.
4. Lastly, some of the runs of wire are unsheathed longer than I'd like. For example the horn lead or the washer lead, the underhood lead. I have some single line tough nylon wire sheathing I'll be putting on top of these. Probably overkill but it will look better and offer some protection of those wires.
5. There are two blank slots on the fusebox so I can wire things up that I need. I'll be using one for the radio and some Aux lighting, and the other one will be for the AC. There are also a few open slots that you can add hots from existing fuses...maybe run the radio from one of those instead of its own? My jeep will remain fairly basic and doesn't need more fuses, but Centech also sells aux fuse blocks too, which would be a pretty easy answer if I wanted more accessories in the future.
6. Extra grounds...there are extra grounds everywhere. I feel that there are so many extra grounds to attach to chassis and there are supplied stainess screws to anchor them. I'll be using all of them just to make sure ground is never a problem.
As stated before, they did add in the length needed so that it reaches to the back on the Scrambler, and added in the correct connectors for the HEI ignition and Tach. They also supplied all new bulbs for the dash (not the rectangular ones, just the normal bulbs). The also furnished a set of other connectors...i may or may not need those.
I plan on finishing all the wiring this week, and am not expecting any issues.