My layout is sectional and I want to join the sections with Molex 8-pin connectors (which I have seen referenced by several modular O scale clubs). I need to purchase the correct ones which are sized properly for the electrical drains of O scale trains. Can anyone post a link to what I need?
Thanks.
Replies sorted oldest to newest
Here's a link to the LCCA modular standards (don't know if you have to be a member to see it): https://www.lionelcollectors.o...manual%20ver%202.pdf
Here is what it lists for connectors and terminal strips:
8 Wire Harness - 60 inches long Del City Part #74825 - delcity.com
8 position terminal strip Del City - Part #70018
The instructions were written in 2012, so I don't know if those part numbers are still valid or available. IMO, if you're only doing this for yourself; i.e., not to connect to other people's modules, you could probably use any connectors that are used for trailer lighting connections - just make sure that they will handle the amperage.
Looks like the part number still links to a cable.
https://www.delcity.net/store/...76.h_959382.r_IF1003
Thank you both. I am concerned about the amperage though I doubt I will ever run more than one train a time on my layout. Since I am not an electronics wiz, that is why I was asking here for help. I can find 8-pin molex connectors online but have no idea if they are appropriate amp-wise for the job.
The product that I mentioned and GRJ linked is used by LCCA for modules, so I think you can be confident that it can handle the draw of a couple of trains. That product has 3 12-gauge wires and 5 16-gauge wires. A quick search for maximum amps for 16-gauge yielded multiple answers (imagine that!), but the lowest maximum was 10 amps, and 12-gauge will handle at least 15 amps. If you have a modern transformer, you'll trip the breaker before you exceed the capacity of either size of wire. And if you don't have a modern transformer, add a fast-acting breaker.
Perfect!
Those connectors were designed for trailer power connections, including electric brakes. I'm sure they have more than enough capacity for model trains. 
https://ogrforum.com/topic/186...1#185988372735118281
12 Gauge Wire is rated for 20 Amps, 16 Gauge Wire is rated for 10 Amps. Those automobile to trailers connectors will work just fine. Plus they only fit together one way so no chance of connecting them wrong.
Access to this requires an OGR Forum Supporting Membership
