OMG!!!! THANK YOU! I have been battling my 13' Escalade for 4 weekends straight. I've been doing car audio for 20 yrs, so I'm not new to the scene. But when this Esky stomped me I was about to give up, and rip it all out (literally, frustrated 👿👿👿). I did the big three and all, and still when my auto door locks, windows, even horn operate, the amp, shut off. I was about to take it to the shop or give up and sell my skar rp2000.1. When I passes the big 3 ground wire through the sensor BAM amp stays on. Should have known it was a sensor. My BMW's have the same smart alternator. Your info should be made a sticky on a forum some where. Thanks a bunch!!!!!!😁😁😁😁💯💯💯

U REMOVE THE LOOM AND REMOVE THE SENSOR THEN GET BOTH GROUNDS THROUGH THAT SENSOR THEN LOOM AROUND IT TAPE IT REMOUNT GOOD TO GO 😎😎 JUST DON'T GO WITH 0 GAUGE GO 4 STILL A GOOD UPGRADE BUT CAN STILL LOOK FACTORY UTILIZING OE SENSORS PERFORMANCE IS MUCH BETTER BEFORE THE BIG 3 MY 07 AVALANCHE WOULD DROP UNDER 14 BLINKER WOULD BLINK FAST THEN IT RUNS BACK UP BACK TO NORMAL DID IT ALL THE TIME WITH NEW BATTERIES AND ALTS AFTER HAVEN'T HAD THAT AGAIN DEF WORTH THE UPGRADE 🎉🎉

Yes it will charge the battery more fully which will make the truck run better. It has to do with the spark plugs grounding back to the battery. The battery is actually a condenser for the high voltage coil circuit. Also higher available voltage will charge the coils better. Also when passing multiple ground wires through the load sensor make sure they are all going in the same direction otherwise they will cancel each other.

Mechman offers one wire two pin to take care of this problem

I am soooo glad I found your video. Unfortunately I wish you would have made this 5 yrs ago, lol. I ruined an AGM battery because I didn’t follow this advice. What I did was unplug the sensor and lived with it. I monitored the voltage with a plug in meter. I averaged 14 volts, BUT just because you have 14v, doesn’t mean that your CPU is “happy”. I watched this video initially at work and went outside and basically “undid” the Big 4 (not 3). Going to hook up the way your doing it with upgraded 1/0. I am confused on where ALL of your upgraded grounds are mounted. From the Mechman diagram, I see upgraded ground going through the sensor from alt mount to battery, but is that ALL that the grounds they are recommending? Awesome channel...I subscribed!!

Hot dam...thanks thanks thanks

I'll tell you why you need to replace batteries every 4 years....OPTIMA... I have had nothing but problems with them once they sold to Johnson Controls. I have one in my Trans am that is 8 years old that works great today. Then I've replaced 5 optimas that haven't last more than 2 years in 3 different vehicles.

It sounds like you got an upgrade alternator and are still using the sensor . I saw this sensor on my first install in this truck . I was wondering what it was for . Glad I found this video . Thanks

Getting ready to install a system in a 2013 tahoe. I installed a 350 amp alternator that's a 4 pin and installed a Mechman 2 pin module and the 4 pin connector has 1 + wire that you install on any wire ignition turn on. Ran to injector. With a inline fuse. Recently installed big 3 kit Haven't gotten that far yet to try. Getting new batteries at the moment. Thanks for sharing your post

I haven’t run through that sensor I have dual batteries and the big 3 and everything works flawlessly. On 3000 watt rms

This is a great video. I do a lot of voltage issues on transit coaches. We were having a lot of no starts in the lot. Kept looking at voltage drop and changed all of the positive cables and grounds to the batteries.

Just planning my upgrade to try and get rid of the headlight dim when the bass hits, and I thank you for this info.

You saved the day man! All these unprofessional forums without a solid answer. This is exactly what I was looking for, regarding my 05 Tahoe with a gnarly sound system. Thanks for the clarity, thanks for staying humble along with the great context of words. So stoked! Can't wait to dial this thing in.

I have an 02 Sierra. Thanks this really helped me out.

Firstly, Liked and Subscribed. This was great info. I just put together 2 extra grounds for my truck the other day then came across this video and thought, bahhh now I have to redo them somehow. But I guess not, I have a 2001 GMC Sierra, and it doesn't have this sensor. So it's probably OK to assume from about 99 to 02 Silverado/Sierra (probably the other GM full size vehicles also) that they don't have this RVC. From 2003 and up it's very possible that they introduced it, since that was the new body style update, and some electrical and minor body style changes occurred.

THANK YOU FOR THIS!!!! I did the "Big 3" and completely forgot to put the GBCM (Generator Battery Control Module) on any of the grounds. Battery life was awful - for obvious reasons. Still forgetting and not even knowing about the GBCM, I dropped a 3300A XS Power battery and a Mechman 260a (I think, maybe 240A, with the stock being 80A) alternator. Still horrible. I thought the alternator was bad. Tested the stock, everything seemed fine. Nope. The first time it got cold, I'd have a dead battery. I mean 8 volts dead. I resorted to changing the battery at night via a charger. I even changed the battery. The XSPower battery has been sitting in my basement for a year and still has a 14-volt charge, so not a battery issue.

Thankyou for this video!!!! It’s almost NOTHING out here explaining how to do Big 3 with the sensor!! Great information and detail!!!

Had this same sensor on my power wire from the alternator to my battery in my 2010 impala. Battery Saver would always engage after like 10 to 20 minutes, especially with climate controls on. I didnt wanna take out any of my factory wiring after doing the Big 3 because I believe in adding on, not replacing. So I ended up picking up a good sensor at a junkyard and spliced the new one into the one I already have. Ran my 0 ga power wire thru the new sensor and I haven't had Battery Saver pop up ever since. Voltage has been great too.

The best I've seen so far, less talk and show's more troubleshooting and research with out standing results, thank you.

Great information man this has help me in my fix in my 2005 5.3l you are great man i have do it with your help