Install wasn't that hard. I basically just followed the instructions as best as my OCD/ADD brain could.... I get sleepy reading instructions. I speed read through, toss them off to the side, the refer back to them later way my true inner retard comes boiling out and something isn't working. I do have a few questions for Dakota Digital, but nothing that really matters right now. All of wires are a mile long, and I've got a semi tidy rat's nest behind the cluster. If I can trim those down, (I'm betting I can), that would clean up a bunch of that. I'm sure some of their specific jumper cables can be had in custom lengths as well. Right now it really doesn't matter. I want the extra length, just in case things have to be juggled around with the new engine.
It wasn't difficult to put in, but it was time consuming. All in all, I've got at least 8 hours screwing around with it I bet.
I didn't want to cut anything in the factory harness. Hindsite, I should've started earlier and found a roached third generation set of gauges to cut the plug out in the back. Making pins, soldering the pins, heatshrink, then getting those pins into the correct place took a minute. Even then, what I did isn't a great solution. I was thinking about making a male plug using the cnc to mark out the hole locations, then finding some small brass rod, (or making my own on a lathe), so I have something a little less jury rigged going together. I think it'll be fine, but might be a problem later. If it is, I'll do something more clever.
I removed the original gauges first. Found a diagram from here somewhere and printed that off. Then started on figuring out how to make a connection to the factory barrel plug. This is what I came up with.
Basically a solderless connector, sans insulation.
-The top one is the way it came out of the package.
-Then I ground the one end basically in half.
-Folded it together to make a pin, (which was fidgety AF). Easy to make it too small, also easy to be too big. It took some trial and error, mostly error....
-Then soldered my wire to it, and put heatshrink on so just the end was exposed.
I needed a ground. I needed signal for: Left Turn. Right Turn. Hi Beam. Fuel Level. Dimmer. And I needed a switched hot from the ignition. I also needed a fused constant hot, which isn't in the plug.
The ground in the factory plug, I only used that for the fuel level, no where else. Earth for the brain box I pulled from the chassis, and the constant power I pulled from a previous owner's installed EZ harness setup. I have no idea what is running off of it, if anything, but it is energized, and I put that on a 3amp fuse and one of the circuits. Soldered splice, with heat shrink. While this is amateur hour, I'm doing the best I can.
I had this all together, then I forgot a few things after I had it nicely heatshrinked together, and had to take it all back apart, and do it again. This time I didn't have enough heat shrink that was large enough, and I just did a tape wrap. I'm not a fan of doing it that way. It's too tight and not as flexible as it could/should be. It'll work, just not my favorite.
I folded the wires over, zip tied them to the Toyota harness, then wrapped the hole thing in tape. Leaving a tail hanging off, so when some poor bastard, probably me, gets to take this apart, it does so easily. I thought I had a picture of it wrapped, but I guess not.
Once again, this is not ideal, this is not perfect.
You have to mount a switch to control the center screen. The bracket has two holes in it. I drilled one out a bit bigger, backed out a bolt on the parking brake mount, and affixed it there. It's fairly out of the way. Doesn't stand out, and I didn't have to make any of the dash holes larger. Which is good, because I don't think I've got a uni-bit that is the correct size anyways.
The first sender I installed was the speedometer unit. That was pretty simple. Basically take out the cable, thread in the sensor. There is a little brass unit that comes with the kit. I slid that into the transfer case first, then the sender into it. Hand tight, that's it. It comes with an extension. I don't see a need for it in this application, and did not use it. The cable that plugs into the sensor, I zip tied to the crossmember in two places, then strapped it in to the original spots on the frame, then along the firewall. I think I secured it in a few other places with zip ties as well.
Don't be a douche. Trim zip ties off with a good flush trim cutter. That way there isn't a razor sharp tail hanging off that is sure to rip your hand or testes to shreds when you least want them to.