Marchant89 Posted August 21, 2021 Report Share Posted August 21, 2021 Curious if anyone on this forum has done big 3 on titan as there is a regulator the ground cable runs through to the alternator haven’t had much luck getting answers I’m putting in a 390amp alt and it requires big 3 . Can I just bypass it/ do a 2nd run/ or can I squeeze a 0gauge with maybe dremel work without damaging. anything will be helpful at this point I’m sure someone has worked around this before. There is a video on YouTube they used a 2gauge attached file is the screenshot of the video Link to comment Share on other sites More sharing options...
Dafaseles Posted August 21, 2021 Report Share Posted August 21, 2021 I have the kind of the same thing with my truck. A Chevy Silverado. I contacted mechman, and have done some youtube research, and my truck, because of the regulator "doughnut", it doesn't like when you ground things to the frame. So what I have to do is squeeze a 1/0 through the doughnut, ground it to the factory ground point (in my truck it's on the engine block) and all the amps and the extra battery ground, I have to ground straight to the alternator. You could try that, from how you explained it, it sounds like the same concept more or less. Or contact the company of the alternator and see what they say about it. RVC's are common as hell nowadays, they should be able to shed some light on it (or, even if it's not a mechman, contract them and just lie and say it's a mechman lol, they knew right away about my truck). Or, you could bypass it completely and go externally regulated alternator. I've also heard of people having good experiences looking for answers for questions about voltage controllers in forums and Facebook groups that are for huge fans of a specific car. You could check and see if there are any nissan titan specific forums or Facebook groups. Sorry I don't know the specific answer, but I hope that helps a little 2011 Chevy Silverado under construction My build log here. Check it out! Link to comment Share on other sites More sharing options...
Marchant89 Posted August 21, 2021 Author Report Share Posted August 21, 2021 For sure helps i appreciate the reply!!! I actually got a js alt. mechman is who had the video on YouTube and they used a 2gauge. I think I read somewhere that a guy had filed the regulator down enough to squeeze a 0 through it. Part of me wants to ask a nissan dealership. There just has to be a real option. So what I’ve gathered is it’s in charge of making sure the battery isn’t overcharged and helps mpg. If I’m adding a secondary battery will it charge it as well. So many questions and nowhere to turn but here so I do appreciate everyone’s responses. Link to comment Share on other sites More sharing options...
Dafaseles Posted August 21, 2021 Report Share Posted August 21, 2021 How big of a system are you putting in? 2011 Chevy Silverado under construction My build log here. Check it out! Link to comment Share on other sites More sharing options...
Marchant89 Posted August 21, 2021 Author Report Share Posted August 21, 2021 390amp Link to comment Share on other sites More sharing options...
Marchant89 Posted August 21, 2021 Author Report Share Posted August 21, 2021 Running 2500 watts to bass amp and 500x4 mids and highs Link to comment Share on other sites More sharing options...
Marchant89 Posted August 21, 2021 Author Report Share Posted August 21, 2021 System is actually in place and clearly electrical can’t hang I clip fairly bad when I get around 33hz at full tilt Link to comment Share on other sites More sharing options...
Dafaseles Posted August 21, 2021 Report Share Posted August 21, 2021 12 hours ago, Marchant89 said: System is actually in place and clearly electrical can’t hang I clip fairly bad when I get around 33hz at full tilt That's not a huge amount of power demand. If you upgrade and can squeeze a 1/0 through that hole and ground it to where the stock ground is, I think you'd be good. If you add a second battery, just ground it to the alternator, but make sure to have a run going back to the stock battery as well, so the RVC can work with the new battery as well. Wire them in parallel (positive to positive, negative to negative). That's how I used to have it in my truck. It seems like that voltage controller is very similar to the one in my truck. Looks the same, acts the same, does the same thing. It's kind of a pain in the butt because you have to ground everything to the alternator, but if you grab a solid distributing block and ground everything to that, then you can just up the wire size coming from that to your alternator to 2/0 or 4/0 to kind of clean up the wire spaghetti mess. Don't have the battery ground going through the RVC attach to the distro block though. Leave that separate. I've also read that you can run cake next to the RVC and it will pick it up, though I've never confirmed that, so I'm not 100% sure on that one 2011 Chevy Silverado under construction My build log here. Check it out! Link to comment Share on other sites More sharing options...
stingray72 Posted August 22, 2021 Report Share Posted August 22, 2021 I wouldnt grind off anything from what ive read about systems like that they need to be in a certain spec resistance wise. Link to comment Share on other sites More sharing options...
Marchant89 Posted August 22, 2021 Author Report Share Posted August 22, 2021 But 2 gauge on a 390 amp alternator is pointless even 1/0 Id be losing a bit of amperage. Link to comment Share on other sites More sharing options...
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