Engine Battery Drain

[ConnieKat]

I also have the jump start gadget! It’s absolutely a life saver! And yep, I went through absolutely everything to try and find the drain. Even the CB, but we hadn’t considered the starter! Figues.....��
ConnieKat

[Scalf77]

Originally Posted by Fool120

What's the deal with the SMB radio switch? I have one, and need to hunt down a phantom battery load, as I'm also having battery issues and have a noticeable crackle when I reattach the neg lead. Replaced the alt last summer, and it charges well. Batteries 3yrs old or so, with old style battery isolator, which could be an issue too. Thanks

Here is a diagram of the Sportsmobile Radio Switch, this is based off of my 2004 E350. This was for a Factory Radio


-greg


-greg

[daveb]

Originally Posted by Fool120

What's the deal with the SMB radio switch? I have one, and need to hunt down a phantom battery load, as I'm also having battery issues and have a noticeable crackle when I reattach the neg lead. Replaced the alt last summer, and it charges well. Batteries 3yrs old or so, with old style battery isolator, which could be an issue too. Thanks

There have been a few owners that had issues with corrosion on the isolators and one of the reasons SMB changed to the Surepower separator. I'd look it over but there are other items that pull light loads that need to be disconnected to make sure you're on the right path. Hate to see you remove something if it isn't the cause.