LGB throttle questions.

[Madman]

The LGB 51070 throttle has two LEDs that indicate direction and short circuits. The 52120 outdoor 5 AMP throttle and the 52121 panel mount 5 AMP throttles do not have the short circuit or direction lights.
When a short occurs the 51070 is what indicates the problem, not the 50111 power supply. Although the power supply does have a short circuit indicator. I have had derailments and the throttle indicates the short, not the power supply. When a short occurs using either the 52120 or the 52121 throttles, does it pass through the throttle and go to the power supplies indicator?

 

[stockers]

It depends on which unit switches out. I would assume that no light would be displayed if the 52120 or 52121 goes short before the powersupply..

 

[Madman]

The only way to know if one of those throttles shorts out, is when the train will not move, let's say it has derailed. So if I understand correctly, both of these throttles has short protection, even though there is no indicator light. Or the power supply would only indicate a short if something was wrong with the throttle. Would I be correct in these assumptions?