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Thanks for the info, that's indeed what I did assume. Yes the vehicle does start and run, given the battery does not receive a charge due to the connector not connected to the alternator.

Hi all, I'm fixing my buddy's truck while he's out of town as explained in another post I made on this forum. He swapped in a 2001 XJ Engine and Trans and into his '90 Comanche. The wiring is the original comanches. I took a look and seems like he still has his XJ alternator. The comanche alternator wiring is this l shaped plug here: His alternator requires a plug that will fit his alternator as seen here: I am not certain at all that he has a voltage regulator already installed, so just to be on the safe side, has anyone made this conversion before or has a suggestion for a conversion kit for this? Thanks all in advance.

Hey Eagle, Just curious if you managed to take a few photos of the clutch pedal from your 2000 cherokee. Hoping I'm not off to buy a new clutch pedal, and possibly it's just been installed wrong. Thanks in advance!

You have your 2000 clutch pedal mated to your comanche? Hopefully now after the photos I submitted you can see why the fuse-box does not fit.

Oof, you asked about the two things that aren't hooked up. No A/C has been hooked up,, so the compressor is sealed for now, and my roomate would prefer (I don't know why) that it isn't... and the radio is with me, but I haven't tried installing it yet until I get the whole interior sorted out.

The motor is running off the original MJ ECU Here is all used in the fusebox:

Perfect! I was just about to ask of photos with it depressed. Thank you SO much. I was incredibly worried we'd have to cut out a new firewall to have it mounted.

Thank you incredibly much for those photos. So our hunch was right, we were doing everything we right, it just seems like the clutch pedal needs to be replaced or somehow fabricated to not directly depress over the fuse box.

We tried this. Still no room. There is currently a metal bracket fabricated to keep the rain and water out that covers the firewall that the last guy who helped my friend made. Here are photos to show what's going on currently and how the clutch almost touches the firewall. It basically has about half an inch of space with the clutch fully depressed. I have a feeling that the clutch pedal might need to be replaced with a comanche as the bend causes it to basically depress directly over the fuse box. Link to larger images if you wish: https://imgur.com/a/5SgdwsQ

Gotcha, okay, thanks for the clarification. Perhaps then it's the clutch pedal (being it is from the cherokee, that is different than the comanche. Or perhaps it's the dash that is from the cherokee that is causing it to be difficult to mount the fuse box. Thanks again!

Sure thing! Here are some images that I took a month ago so they are not currently reflecting the engine bay, however here is a video of it running last night, it's short, sorry but I'll definitely be making a longer and better coverage video here this evening when I drive it around. Link to video of the comanche running:

Awesome, thanks for that heads up, I'll be assembling it a bit more this evening and will glady take your suggestion.

Sure thing - I've put together the interior a bit since this image (steering wheel, shifter, 4wd lever etc.) but since I'm not in front of it right now at the moment, here's what I've got.

I thought this originally, but it starts thanks to the mechanics who realized it was not completely all spliced together and mostly all intact, most of the lights work, I’ll have to build a switch for the radiator aftermarket fans, it’s just the fuse box and block that are currently zip tied under the dash. That’s the only remaining issue really. I’ll definitely reiterate that it wasn’t my idea to do all of this for sure, this was just the result of trying to sort his friend’s wiring out to make it work in time. Hopefully It won’t require a complete rip out - I’ll send over some photos tomorrow of the work done so far... but you guys know better than I...

Hey Dzimm, the engine, transmission, and all of the interior, minus the headliner and carpeting is a swap from a 2001 Cherokee. The electrical (mostly) was a combo swap between the Cherokee and the Comanche. Seems like about 80% of the electrical is from the Comanche, The guy who helped him out seemed to stop at the interior fuse box and block. The issue I'm facing now is just properly mating the fuse box (from the comanche) to the fuse block (from the cherokee it seems?) There is just not enough room for the clutch to depress and I can see that it because the dashboard and panels are all from the cherokee.

Hi all! I own a dodge, but after this past month, how much I've fallen in love with my roommate's Comanche. Here's the back story on me and this truck. My roommate is a disabled combat veteran (served in Afghanistan in 2004) and one of the absolute best friend I have. He is out of town for a month, and recently moved in with me when my other roommate moved out. He's been working (more so his friend who started to flake on him helping to convert the truck) on a 1990 Comanche and mating it with a 2001 Cherokee 4.0L engine with manual transmission. Unfortunately, he isn't a mechanic by any means, and what he thought would have been a couple month project, has turned into a 2 year ordeal that has become an absolute burden to him. He's had to borrow his boss' truck for the past year, and recently entered more debt by having to buy his own car. This has been a HUGE stress on him, and I hate to see him so down and out. He's run out of money to continue to dump money into his truck, and has run out of patience with his friend helping him rebuild it. I asked him before he left, if I could at least take a stab at helping him out, and he was more than thrilled when I had offered. So I reached out to a local Jeep group on Facebook, and as you can see here: https://imgur.com/DdPaSJG received so many offers to help. As I said in the post, it wasn't a charity event for him or I, I have saved up money and planned to do this while he was gone for a month. Thankfully so many people reached out to help, and a couple of mechanics have been helping me along these past few weeks. Well today, we drove it around the block, and I can't explain how much of an amazing surprise this will be for him. He returns on September 4th, and since he's out of the country for work (and most likely will be jet lagged) I asked him, without giving away too much detail, to stay awake and come home as soon as he can once he returns. The reason for this post isn't to gloat about this, but to ask for your help in this final sphere of this rebuilding process. The electrical system is totally out of whack. I tried mounting the fuse block to the firewall, and the fuse box on top, but there is absolutely no room for the clutch to be depressed. Because the interior is all Cherokee (2001 Cherokee keep in mind) there is no room for the comanche fuse box it seems. I'm wondering if it all needs to be replaced in order to make it work? Can anyone give any guidance as to what I might need to order (I am terrible with electrical systems but eager to learn!), but if anyone has any guides on what I might have or what I might need to get in order to mount the fuse block/box and finalize this project? Thank you all in advance, and happy to share any further photos you need or would like of the build so far!