Exalted85

Sorry, misread a diagram on fp question. Disregard. Okay..so I'm connecting a #4 wire to hot pin of alternator, then to passenger side positive terminal post? Do I leave the original one on too? It doesn't go into much detail about this part..and I guess he never uploaded pictures of it. If he's going directly into the passenger battery, will the voltage still be regulated properly? If you don't keep the original wire on the hot pin, what do you do to it?

I am about as dumb as a brick with electrical (in general, too) auto stuff..I'm going to have to review that more tonight..is that saying that the fuel pump is also tied into the black tan wire I have into the pass battery? My fp pressure from my fass also seems a bit erratic..I'm wondering if I'm thing to have to address that separately as well.

This mod appears to be the mod I've already done. Ground rerouted in front of alternator, then ground directly into battery terminal. I've deleted the gray plug completely, as I heard this plug can also cause problems. Ac noise is within spec, tested and true, as the previous alt was leaking. Replaced with reputable nation's alt, and re tested several times.

I think I've got some electrical issues. My main problem is the apps. It probably needs to be replaced..but I'm trying to properly diagnose it, or if it's something bigger. Back story. The truck at all speeds has what I think is "dead pedal". 47re. When I'm taking off, the truck seems to go, then cut, then go..like it's not certain where the pedal is, even though I haven't moved my foot. The biggest problem for me is highway driving. I can't maintain speed with cruise control. If I reset the apps by unplug, key on reset, it'll work for a while, then fall off. If I set cruise control, at say, 65mph..rather than keeping a steady engine load of say, 20%, to maintain 65 on flat road..it will shoot you to 30% for a second, then drop to 0, then jump up to 25, then zero, etc..it's like it can't properly use or calculate what the appropriate engine load needs to be. I've tried cleaning grounds: pcm strap, passenger body, I've deleted and hard wired passenger battery ground disconnect, I've installed a bd noise isolator, mounted to that clean passenger side body ground. So ohm testing. I'm no electrician, but here's what I've found. I have a digital mm, on screen it sets m infinity symbol..I guess that is milliohms? (Is that even a thing)..when the truck is off, putting neg on pass battery neg, pos to alternator case, I get 0. However, on the body grounds, firewall pcm strap, and body ground with bd iso, I get 0.03. With the truck running..alternator case / block, it's still 0. However, body grounds and firewall ground to pcm go up to..0.16. Is this within spec, and what could cause such huge increase? I have a nation's alternator, because my old one was leaking ac noise..this one however, is not. My black / tan is routed out to radiator, then around to battery. It is not wrapped in tin foil. I had my battery terminals replaced with military terms. (I asked for new cables too, but they retermed old..). Anyway, I've noticed some battery spill on both batteries. Passenger side new pos term has a tiny bit of corrosion, but the term itself has turned dark gray. I never had any corrosion on my old terms..and I did notice my voltage, temporarily in the morning, was higher than usual..not grid heater fluctuating, but constant. I felt the battery cables when I got home that day, they weren't warm at that time..but I feel like I've got some intermittent electrical issues I don't know how to identify properly. Oh, and my radio stopped working completely. It started off occasionally, then it would randomly turn back on once n a while..now it never turns on. It has power, lights, hitting volume turns clock on for a few seconds, then turns off again. My blinkers, both sides, randomly stick on. I think that has to do with gauge installation tho..probably unrelated. Jesus, sorry for long winded post..I hope someone can skim and help lol. Batteries are from 2015..had them load tested at an interstate battery store..said they were fine