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Troubleshooting your turn-hazard-brake light systems

The tail light circuit feeds to the headlight switch from Fuse 8 (20A) via a Pink/Red 18 ga wire. It exits the headlight switch via a Black/Yellow 18 ga wire. That wire dives into the loom and up around the steering column hits a big splice and goes a bunch of different directions. From what...

Check out the alternatives to the vacuum operated CAD setup in the How To section of the forum here: https://wrangleryjforum.com/threads/center-axle-disconnect-replacement-options.26989/

So begins the saga of the 8.8 rear diff swap. The donor is an early 80s axle from a Ford Explorer. It came with limited slip and 3.73 gears. During early tuning of my 4.3 I'd figured I would need to regear from my current 3.55 , and so when this one came up for sale reasonably, I snapped it...

For the VIN number, Google "jeep wrangler vin decoder". You'll get a page full of hits. For the manuals, check out this forum's yj resources section. Most of the manuals that are readily available are there.

Yep. I supposed your wire harness could have gotten crushed or a connector fried in a way that would cause all that, but my money's on the turn signal switch. Kind of a bummer; it's not fun to get to and fish out of the steering column. There are youtube videos on it; I'd watch a few to get...

Heh. It's all moot now. The 4.0 drivetrain is sitting on the floor, and the yj is sporting a 4.3L and 700R4. This setup loves my current gearing. Don't have a MPG yet, but it's going to be good.

Got it, thanks. A jump from 3:07 to 4:56 just seemed huge, and I hear about folks doing it all the time. I never liked how fast my engine was spinning at highway speeds. It never seemed comfortable up at the higher RPM and as I noted got truly dismal mileage. I can't imagine spinning that...

The Hazard fuse is the 5th one from the right in the Power Distro (the "brake/haz" fuse under the dash does not protect the hazard circuit like it says it does). The hazard fuse should be 20A, but from your description I'm betting it's either ok, or like the brake light fuse will blow as soon...

I've never understood this. My yj had a high-miles 4.0 Auto with 3:55 gears and 31 inch tires. It had no problem getting up hills. With the pedal on the floor I could accelerate up a 6.5% grade, hitting 75mph at the top. It would suck gas like a teenager drinking soda, but it would do it...

I'd start with a compression check. If there's something fundamentally wrong with the engine that will tell you. If the rig has lots of miles, plan for a timing chain. I've seen a new timing chain really wake up an old engine. Assuming that's all good, it's all about fuel and ignition...

That's a nice looking Jeep. Well done!

Mine's not stock anymore so my specifics won't help you, but you'll want to mount the DD unit close to the fuse panel under the dash. I put mine on a plate with 3M double-sided foam tape, but it has regular mounting lugs as well. You're looking for a white wire with an orange stripe coming...

I just used the Dakota Digital unit on my project. A little pricey, but it worked great and was easy to set up. Even has some diagnostics if you load up the phone app.

Grab the Wiring Diagrams. There's a lot of stuff that can cause a no-start. First place I'd look would be the automatic shut down relay. It and the fuel pump relay are in the power distribution center under the hood, and operate together. Fuse 1 (30A) in the power distro serves load current...

I never had heard of them. Man, wouldn't it be cool to ditch the distributor? But I have a lot invested in my stock tbi setup at this point. I also like the fact that there's still a gazillion potential parts doners kicking around out there. Maybe on my next project...

Final addendum to my build thread. My 4.3 was a frankenengine, with an early block, later heads and an Astrovan cam. That meant there was no stock fuel/eprom map that worked well for it. That's not a huge loss; the stock mappings for the 4.3s don't seem to be all that great, and largely...

Doesn't look like they have brackets for a yj. A lot of folks running other suspension seats report that they sit too tall, etc, and mods to the seat brackets are needed anyway. I figured no matter what I did I'd have to make my own.

Nice! Those look like good seats for a reasonable price. They're out of stock on the straight black ones (the red striping isn't my style), but I might just wait for them. Thanks!

If it was me, I'd just keep the fuel injection on the engine, and take the whole control system intact. It seems like having the transmission dependent on a computer defeats the purpose of ditching the engine's computer. I'd trust the GM brain for both reliability and availability of...