Dave16131 Posted July 20, 2021 Share Posted July 20, 2021 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! Link to comment Share on other sites More sharing options...
Dave16131 Posted July 20, 2021 Author Share Posted July 20, 2021 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! 1 Link to comment Share on other sites More sharing options...
Ivylog Posted July 20, 2021 Share Posted July 20, 2021 (edited) 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 July 20, 2021 by Ivylog Link to comment Share on other sites More sharing options...
vito.a Posted July 20, 2021 Share Posted July 20, 2021 The Intellitec Big Boy relay is usually the culprit. You can remove it and clean the contacts on the inside. I replaced mine with new and then cleaned up the old one and kept it as a spare. I found a new one on eBay fairly reasonably priced. Attached are the Big Boy rebuild instructions. Big Boy Relay rebuild instructions.pdf Link to comment Share on other sites More sharing options...
Dave16131 Posted July 21, 2021 Author Share Posted July 21, 2021 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 Link to comment Share on other sites More sharing options...
whaley96raw Posted July 28, 2021 Share Posted July 28, 2021 Are there any pics or info about what the BIRD is? And the Big Boy relay? I have the same problem on my 2006 36’ Cayman w/300hp Cummins Link to comment Share on other sites More sharing options...
Dave16131 Posted August 7, 2021 Author Share Posted August 7, 2021 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! 1 Link to comment Share on other sites More sharing options...
willbo777 Posted August 8, 2021 Share Posted August 8, 2021 Respectfully, do you mean M&M? Link to comment Share on other sites More sharing options...
Dave16131 Posted August 8, 2021 Author Share Posted August 8, 2021 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 Link to comment Share on other sites More sharing options...
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