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Both batteries need to be grounded to the body very well. The engine then needs to be grounded to the body very well. The alternators ground through their body mounting to the engine. It's worthwhile to add extra connections. You don't necessarily need to run a ground cable from front to back...

I didn't catch that you wanted it to be a separate system. Yeah, it's possible for the ground to get noisy and the PCM to get upset by it, but the only way to find out is to try it. Make sure all the grounding points are extremely good, and maybe add a few. It would be very bad if the separate...

Several of us tried "high output" aftermarket alternators in years past with very limited success - mostly failure. The control in the LS Gen1 alternator is somewhat uncommon, so the aftermarket just doesn't deal with it well. This also hits on the usual problem with "high output" alternators...

Ahem.... feel free to stop by and take a look at mine. That's the problem with the internet - someone might actually know what they're talking about. Mine is actually broken. Like really, seriously broken, from when I violently removed the valve cover years ago.

IIRC, it's a 4 gauge jumper to the starter, which is 2 gauge back to the trunk. Rated for something like 130 Amps.

re: valve covers, mine leaks on the driver side because the part that the oil fill tube snaps into is all broken up. Can't keep the o-ring tight. So if that's the problem, then yes, you're just in trouble. Otherwise, it's just normal valve cover issues. They are a PITA - lots of tight spaces...

And the worst of the reliability problems were the early tensioner design which was 2000, 2001 and maybe a bit into 2002 - so none of the Thunderbirds had that design. There were spats of transmission issues, but like Joe said, the low sales and that they were much more likely to be babied...

Yeah, that doesn't make much sense. The aftermarket replacement units are universal - they have a pressure port with a supplied plug. So if your car had the sensor on the hose then just put the sensor on the bung, if the sensor is on the pump then just install the plug. Maybe they're confused...

One unit sold! One complete unit ready to go: $70 shipped. One unit complete, but no box. Will sell as-is $65 (choose your own enclosure!).

Bumpity bump bump. Two units on hand. One complete and one complete without box. For sale thread: For Sale - LS: Gen 2 fan controller for Gen 1 cars

Updated installation link: Production Gen 2 fan controller for Gen 1 cars New batch of 3 units on hand, but I only have 2 boxes. Trying to find old radio shack stock...

FWIW I did not have good success trying to buy - or build - a high output gen 1 alternator. Bought units failed or caused issues (I suspect they were using the wrong regulator, and I tried 2 or 3 different vendors) and units I built just performed like stock. NAPA alternators were actually the...

Nice history lesson!

A previous owner may have put the LSE trim on the car at some point. That was possible in the late 2000's into 2010's when the parts were available. I was tempted to do that conversion on my '02 - it's the same color. The car is rare because all LS's are rare at this point. :D Valuable? No...

It's a crapshoot either way. The rebuild will be great if it was a quality rebuilder. The OEM will be great if it hasn't dried out. What I would recommend is just pick one of them, then take your old one and spend some time finding someone you can trust to rebuild it. Keep your new/old/fresh...

That is, quite literally, the entire point of this device. Also, I sold the last one a few weeks ago so I do not have any on hand right now.

I doubt anyone is actively developing - or even selling - LS tunes. The LS uses an uncommon engine - the Jag 3.9. I don't know what ECU specifically it is. Back-in-the-day SCT was the only platform that was really used to play with the stock ECU. But if HP says they support the ECU then they...

Third unit sold! All sold out again. Last batch took a couple of years to sell, then this batch sells out within a couple of weeks. Crazy. Anyone interested in a unit please send a PM as I can always run another batch.

Normal car charging is 14.1V. The nearest common rating for DC components is 15V. I wouldn't go over 15V and you want to stay well below that because its the surges/spikes that quickly kill things. Higher voltage probably won't really help you. Keep the voltage low and the amps high and have...

I haven't looked for gen2 cars, but there are aftermarket copies for gen1 cars. Just be warned that the copies are very poorly made. I've had them leak and the wiring harness had bad connections right out of the box. Better than a completely glazed over stock set, but not great. I resigned to...