are the wires soder together or elecrtical tape cause even though you put electrical tape on it the little volts that it loses will make a difference like for instance i hooked up a air/fuel ratio in my car i had the wires taped together and it didnt work i was pissed so i called autometer and they said soder them and it will then explained about losing some volts will make a difference. Not sure but thats what i would try its a simple thing and it might work. if not let us know and we might be able to figure it out. by the way after you souder them make sure you melt shrink wrap on it.
sauder---> saw-der <---- cant spell it so ill pronoce it