Richard my WS19 carrier is the one known as a No22 which allows for the PSU to be mounted on top of the wireless. The No21 carrier is for wireless and PSU in line.
I imagine that a metal shelve would have been fixed from the track guard and over the crew seat for the Welsh Guard configuration. But I've simply installed a non fixed wooden shelve so as not to hamper battery access more than it already is..... For that reason I invested in a sealed for life battery (mine is 12volts).
However I've still fitted the correct rubber/metal feet to the WS carrier. Ron
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