[Where do the endstop wires go?]

So I figured out where to plug in my thermistor, but I have a bit of a problem. With it unplugged my printer says it is at 500/0*c, with it plugged in it reads 480/0*c. Any idea what's going on?

 

[Where do the endstop wires go?]

Thanks for all the responses! I was able to get it sorted after knowing I only needed the ground and signal. Some pics online and a multimeter got me the rest of the way (and trial and error of course). One problem solved and on the the next! Does anyone know where I hook up the thermistor? (that's the things for measuring the temp of the extruder right?)

 

[Where do the endstop wires go?]

 

[How to hook up endstops?]

I have a 1.5.7 electronics kit that came with a set of endstops that I can't figure out how to hook up. They have 4 wires instead of the usual two I usually see with ultimakers, +, -, empty, and signal. I'm not sure which ones too hook up to the electronics board. I know that there are two prongs for each endstop, but it don't know what each of the prongs are. Can anyone help me?

 

[Where do the endstop wires go?]

A while back I purchased an ultimaker electronics kit that I've slowly been building. However I have become totally stalled with the end stops. The stops that came with the kit have 4 wires. I beleive its the usual +, -, blank, signal, arangement. However I can't figure out which wires go where on the board. The endstop spots only have 2 positions and I have 3 wires I need to plug in, on top of that I don't know which one goes where. I would be really greatful if someone could help me out with this.

Thanks in advance.