RJR
I see a VERY good point in there.
IF you smell something unusual when operating electrical products, or even in General;
FIND What IT Is.
Then determine if you need to fix, reroute, reconnect, or replace something.
PS
For Everyone !
I use a wall wart for my TIU power, but it's a bigger one, not from RS.
It's 15VAC 2Amp and I have run a TIU with 2 AIU's connected. Heaviest use was when switching the Wye's, that would switch (power on) as many as 4 of the relays at once. No problems there for me. But I doubt the RS unit would fare so well, Relay coils EAT current. This is made worse by being at the end of small wires in the cable to the TIU, that drops more power under load. Thus the reason not to use a AIU on a RS aux power module. Current limit exceeded gives you a brown out on the TIU power, you lose control of the trains while it reboots!!! Think about it, does your computer come up instantly? No, neither does the TIU, tho it is much faster than a PC. Also, if the AIU Relays hang in the ON setting, the Brownout continues - Your Trains CRASH.
