I have twin fans on my RST.

I need to wire in a relay for them as the keep popping fuses.
However, im confused as to how to wire it in. I have a switch on the dashboard for manual overide but would like the sender to work as well.

Is it possible to wire in the switch and a relay to the standard loom for the fan sender? if so would someone be able to explain or knock up a quick diagram of where certain things need to go. (or just give me an example of how you have wired in your twin fans, seperate or together etc) im really stuck here

thanks