The Dapol OO Terrier could do with some sort of stay-alive, so this example we find a way to insert a pair of mini GoldCaps in
the bunker, connected to the 'G' version of Zimo's MS580.
The GoldCaps will have to go in the bunker, so the metal coal moulding is temporarily removed.
A hole drilled into the frame under the bunker is made for the stay-alive wires, and the pair of GoldCaps are connected up in
series, and inserted into the bunker space - nice neat fit.
Wires to the GoldCaps are fed through, disguised and glued under the frame, joining to the MS580G's pads, which are dedicated
for this purpose (a 5.4V external stay-alive).
The decoder simply plugs into the model's Next18 DCC socket, and all is reassembled. Some care is needed with the Next18 PCB
and the speaker, securing them to the body firmly, otherwise they can easily drop down onto the wheels - not the safest design
from Dapol, but easy enough to secure if you are aware of it. While we were there, we also swapped the factory speaker for one
of our own 15x11mm Sticky Gasket speakers, which is a higher power output than the original - the lack of enclosure still means
fairly low sound levels, but is the best that can be achieved without major rework to find a new location for a bigger speaker.
The GoldCaps work well, providing a second or two of backup power, though they do take a few seconds to fully charge up.