VP Fan wiring issue please help

[wantvpss]

I have wired into my vp a set au thermo fans, my issue is now they wont run from the switch i installed.
I wired them up to the old fan plug but also put in a switch that way i could turn them on earlier.
It worked fine for ages now nothing, I replaced switch, fuse, relay. fans work fine. and now im stumped
im thinking possible broken wire but unsure, any help on this would be great. Cheers in advance

[SweetWagon]

wiring diagram of how you have done it

[Morton]

I suspect you've installed a switch to break the circuit that is only opened by the ecu anyway. You need to either hardwire the fans to a switchable relay, or tap a switch into the ecu thermo signal - blue with a white trace i think?? It's been a few years lol

[wantvpss]

I have a switch withan led in it so i know fans are running, it has 3 prongs on base. 1) earth 2) Accesories 3) power.
the two wires for accesories and power are hard wired to the fan relay
in the fuse box behind the battery. and the rest of the wiring is standard. ive pluged the fans straight into the old fan plug,
hope this helps, dont have a drawing at this stage but could do one.