Weird Canbus issue

[IronButt70]

I'm riding home today and I noticed the check engine light is on. I look down later and light is off. Does this I don't know how many times because I'm trying to pay attention to the road. Later on the red alarm light comes on and my speedo and tach quit working. 5 seconds later light goes out and speedo/tach are working again. Does that 2 more times that I saw. PV shows a Canbus error but no numbers or any other info. Running diagnostics on bike show no error codes. Anyone have any ideas about what all that might be about? Checked all the plugs under the speedo. All clean and tight. Battery cables same. 
17 FLSTC

[Pirsch Fire Wagon]

Check the Connector for cleanliness, corrosion, etc and seat back firmly.

[Hossamania]

Mine wasn't canbus but did much the same, it was overcharging, 19 volts going to the battery, replaced the regulator, all good.

[Coyote]

He has a canbus error.  He needs to check the bus wiring especially the connectors. Start with the bcm connector

[IronButt70]

Pretty sure I found the problem and it goes back to the dealer who worked on the bike after the accident 12/18. The rubber ring on the BCM plug was not fully seated when it was plugged back in. Didn't see any moisture or corrosion damage. Cleaned all the contacts and put it back together like it should have been done in the first place. They also left the alarm siren harness plug just hanging instead of pushing it back into the dummy plug. It was full of dirt and mud. I was already unhappy with some of the stuff they did/didn't do after the accident. This was the last straw. They will never see my bike again. Can't test ride it until tomorrow but I think all will be good. Started it up on the lift and all the lights were out.

[IronButt70]

Rode 200 miles yesterday. No more check engine or alarm lights.