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House Batteries not charging while under way.


Dave16131
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Hello all,

Chris Throgmartin refered me to this site. Have an issue all the sudden with my house batteries not charging off the engine alternator. The Generator kicked in while driving and the Aladin shows house discharging. It did blip back and forth a couple times but, still not working correctly. I'm wondering if the BIRD is bad. Any help would be greatly appreciated!

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Apologize, a quick glance at recent posts and I found useful information on the BIRD. It may be the Big Boy relay, I'll have to do some trouble shooting using the info I found in a different post. House batts do charge when plugged in. Thanks!

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Measure the voltage on both sides of the BigBoy’s lugs with the engine running. Voltage should be almost exactly the same of the BigBoy is warm to the touch…shows it’s energized. Cleaning the contacts is fairly easy if the voltage isn’t the same.

Edited by Ivylog
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Thanks for the tips, I ordered a new big boy relay off Amazon, it's old and probably the original. Already took it apart once and rebuilt it 6 months ago. Only cost $140, not to bad. If it doesn't fix it I'll move on to the next.

Thanks!

Dave

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  • 2 weeks later...

Follow up,

After calling R&R Electronics and trouble shooting with Chris over the phone, we found the BIRD 8 pin connector position 8 white wire was not getting a ground signal. Chris told me to cut the wire and ground it to the chassis on the plug side and abandon the other side, which did work. So, so far it's fixed. I'm really glad I called those guys at R&R instead of just throwing money at it. Turned out to cost nothing, I'm happy. Thanks all for this forum!

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Yes! Ha, don't know why I wrote R&R.

M&M is the company I was referring to. Thanks willbo777 for clearing that up! 

 

Dave

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