Here I attempt to wire my wigwags. However, as soon as I wire in two lights to the same relay channel, a fault quickly develops.

For some unknown reason, the solidstate relays used here don’t seem to like the amount of current being drawn by two 24V 36 watt (1.5 Amp), despite supposedly being able to handle a 5 Amp load. As a result, the relay channel used started to overheat and subsequently died altogether.