190e Another 190e Aux Fan Question

[dtingle]

I have an 89 2.6 and the aux fans will not come on. I have hooked each fan up to 12v and they both work. I have changed the 6 pin relay in the fuse box and the 4 pin relay that is in front of the fusebox that has the fuse in it. I have checked both fuses that are marked aux fan (1 & 3). I also have a new preresistor but have it jumped now so that the fans should come on whenever the car is on. The really strange thing is that whenever I place my key in the on position right before turning it to crank the fans will both come on for a second but then quit. I am really confused about this. The electrical system is not my strength and I hope that there is something simple that I am missing.
Thanks