Ok, using a 5A PSU and a new BOB, we are back to where we were. However, I cannot get the relays to switch.

Click on coolant, the 5V relay on the BOB clicks, light comes on, IN1 (Input 1) on the Relay board switches. The problem is that the relay state on the relay board doesnt change. If I remove the jumper (what does it do?) the relay makes / breaks but that is manual. If I try and bridge to the other side the BOB boards dim and its clearly not happy.

Any ideas? My 5V light on the PSU is also not active however I can measure 5V (PC voltage) across the pins. Is my wiring correct?