Burnt Out Ignition Relay

For the second time in 18 months I've burnt out and ignition relay. It's a common problem with the MKIII Fiesta, but I'm now worried that my fuse box is getting quite melted, so I'm currently looking at how I can move either the heater fan or radiator fan onto a new relay to lighten the load. I believe that I am suffering this problem because I often end up using both those circuits as the same time.

When I've got the circuit working I'll try to put detail up here in case anyone else has the same problem, but for now have a look at the latest burn out relay.