I am not certain, but if I am wrong, hopefully, someone with better smarts will correct me. If I am not mistaken, there is a combination relay which is is in those circuits. I will check my manual and see if this is accurate. If this relay does exist, then it's in the rear of the fuse box. I'll get back on whether or not this is accurate...

__________________
Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.