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99, F150, SC, 4X4, mfg. 9/98. Have installed two new multifunction switches, and when I install them I have only one wiper speed and will not shut off unless I turn key off, or the washers stay on. Dealer on the net warrantied the first one, 2nd does same thing. Turn signals did not work either. Is there an application # problem or is there something wrong with the truck. The old switch worked all wiper speeds OK, except they would come on by them selves periodically and turn signals OK, however hazards did not work, so I figured I'd replace the switch. Any ideas??? New part # Y85Z-13K359-CA.
It has two plugs, one I replaced because it would not hold the wire connectors in place. I repaced it during the second install. and I know the wires are in the same position. It is kinda strange. Do you know if they changed the switch over the years? Had the same problem with wrong parts application with the rear axle.
By EVTM the multifunction switch on the 99 is different than the 97/98. The pigtail connector would even be different however. So unless you switched to a different pigtail connector when you replaced it I dont know what happened. The 97/98 connector would have 10 pins and the 99 would have 9. Both would have only 7 wires in use, but in different location. The wiper section seems to have the same connector but may be wired differently.
Just to show you how screwed up some of the online parts suppliers are, I went to Ford Parts Network, and ran your part number. It shows to apply to 97-99 F150, 2000-2001 Super Duty, and 97/98 Bronco. There wasnt even a Bronco made in 97/98! LOL
By thier collision parts reference they show that switch only works on 97/98 F150
My guess is you got the wrong switch and maybe the wrong pigtail connector.
My advice is just advice..Its free "IF THAT DONT FIX IT, SOMETHING ELSE WILL"
The most expensive tool in your box is "impatience"
The pigtail connector was crossed using the OEM # off the old one. All the slots were not used. And before I transfered the wires I made a schematic just to be sure. It did this even before I replaced the connector with the new switch. When I get a chance I'll call a dealer and check part #'s.
There is no visible difference and the location and number of male plugs are the same. Dunno, hey it all works now and thats good. I now need to Email the internet dealer supplier and tell them that their OEM Ford parts look up is wrong and get a refund.
I ordered a MF switch from Rockauto and they sent me the wrong #. Mine is a 98 F150 4.6. I searched their site using the # off the old one and it came up with a different number. It was pretty comical when I installed the first one and reconnected the battery- wipers came on and wouldn't shut off, no signals, etc. Well, it wasn't funny at the time, but since I got the right switch pretty quickly and the job is fairly simple I wasn't too upset. I can laugh about it now, but used some pretty foul language at the time!
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