how can I fix my front wipers on a Ford Galaxy ?

the front wipers wont work on my 2001 model Galaxy. I have checked the wiring loom in the boot and some of the wires are broken. I have re-connected them like for like but now when I pull the wiper stalk to activate the washer bottle at the front the back wiper activates - it would appear to be a wiring issue but I have connected the same color wires and can not figure it out. Is there any safety system on a Galaxy that will not let the wipers work if the water reservoir is frozen?