The Dapol Junction signal does not seem to work very well, the heavy motor box hanging on the bottom of the post, does not seem to make good electrical contact. Rather than fight with Dapol for a replacement, something that others have said is not so easy. I have applied a bodge which is to put a hook on the underside of the board and then use a large cable tie to support the bottom of the motor housing.

The Junction signal now operates properly and the LEDs don't fail when a signal arm has been moved.