4wd selector wiring schematic
Thread Starter
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Senior User
Joined: Oct 2007
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From: Howard City, Mi
4wd selector wiring schematic
Does anybody have the wiring schematic for the 4wd selctor switch? The only thing that I have power to is the lightblue/red wire that I beleive is for the interior lights.Where does the switch get its power from?-Gem module-$285 for that little jewel.(1998 F150)
Thread Starter
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Senior User
Joined: Oct 2007
Posts: 168
Likes: 0
From: Howard City, Mi
The truck will not go into 4wd at all-lo or hi-I don't here any clicking-there is vacuum at the solenoids on the firewall and on the front diff. If you supply power to the transfer case motor it moves.
Lead Driver
Joined: Sep 2006
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There is complex communucations between the switch, the GEM, the two relays on the firewall, the transfer case motor and the vacuum actuator.
When the proper responses are seen by the GEM it lights the lamp otherwise no action is taken.
This is why it's tough to discribe in detail, were you should have a service disc to follow or a source of extended information.
The first place to check out is the motor assembly on the transfer case.
Good luck.
When the proper responses are seen by the GEM it lights the lamp otherwise no action is taken.
This is why it's tough to discribe in detail, were you should have a service disc to follow or a source of extended information.
The first place to check out is the motor assembly on the transfer case.
Good luck.
