I have a BLI HO SW 1500 that really should have a Keep Alive or Current Keeper because I send it onto seldom used industrial tracks where rail contact is iffy, and it occasionally has to go through an automatic reverse loop section.  

I asked Broadway where I could connect one and got a reply, clearly showing the points where  the chassis ground and 12 volt (+) could be accessed. ( See photo)  (And they cautioned that they don't recommend making any modifications.)

Last October, my (very understanding) wife got me an Athearn Genesis GP9-2 (MKT) for my birthday. Outstanding detailed model and it ran just fine up until a couple of months ago. On my switching layout, I never run the models over 10 scale miles per hour, but I had given the model quite a few minutes of break-in time on an oval of track I keep for such purposes.

Do any of you use some sort of plugs when you wire up DCC in your locomotives? What have you found works best (note: I'm in HO).

I'm using a DecoderBuddy Tiny in an Atlas MP15DC and both the rear (cab) headlight and the KA-4 (that I shoehorned into the cab) are permanently part of the shell - and I'd like to keep the shell fully detachable.

I have received my initial shipment of the very impressive Rapido rotary beacons. Even though the lights are essentially straight forward,  a base, the LED module with power leads, and the globe (your choice of red, yellow, or blue), there are no instructions or information. While the assembly is easy to figure out, there are a few unanswered question with regard to resistance and configuring the light properly on the decoder.