I have an 05 ford ranger edge.The overdrive off light does not come on when I push the button on the shifter. Fuse 27 ok, anyone have any idea's?

This fuse also powers , transmission control switch , DRL module , back up lights switch , digital transmission range sensor and the pulse vacuum hublock solenoid .
DRL module is daytime running lamp module . look at the transmission range sensor . Disconnect thing's one at a time till fuse no longer blows or disconnect everything an then replace fuse the connect thing's one at a time till it blows , then you found your problem circuit .

Keith, 1995 ford ranger, looks like interior light fuse is # 27, 10 amp. in interior fuse box panel and module #3 in under hood fuse/relay. Pg. 308 to 315 in the attached manual show fuse locations for all. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Ford Ranger 1996 2007 fuse box diagram USA version Auto Genius
Diagram of 1996 ford ranger fusebox which fuse is
Ford Ranger Owner Manual
1995 ford ranger xlt interior light fuse location Google Search

If all is working well with the transmission. when you push the button and the light comes on, you should feel a down shift at higher speeds. the 3D light would come on. You are at that point out of overdrive. Pushing the button again, you would feel it going into to overdrive. This is normal

First of all...water and electrical connections don't mix well. Since the overdrive button is located on the left side of the shifter, and your wife spilled water on the shifter, the water has likely caused an electrical short.

With the ignition key off, try using compressed air to blow out any possible water or moisture around the shifer button and at the base of the shifter itself. Since the overdrive button has electrical connections inside the shifter, the water has probably caused a short. (I repeat...water and electrical connections don't mix well) If this doesn't cure the problem, you may need to disassemble the shifter mechanism and check for water or moisture. The electrical connections or wiring may be wet inside the shifter, which is likely causing the problem. Blow the areas out with compressed air and make sure everything is clean and dry. Then reassemble the shifter mechanism and reheck to see if this cures the problem.

Good Luck!

There is an overdrive bypass switch on the end of the shift lever on some, Push the button on the end of the shifter. It is easy to overlook, as it is on the very end of the shift lever, and can be inadvertently switched off when you shift to park. Hope this solves your problem

It's location is in the fuse/relay box under the hood. It's a 20 amp fuse in position 23.

If the fuse is OK there's a fuel pump shut off switch located under the the glove box just above the carpet. To reset it, turn the ignition switch off, push the button on the switch, then turn the ignition on wait a few seconds then turn the ignition off.

Hope this helps

check gearbox oil level remove gear lever switch check feed to switch with meter or test lamp no feed check fuse if ok put 2 wires together car in 4th gear ignition on should hear click from overdrive solenoied if ok fit new switch if not check wires from lever to gearbox for breaks think you might find problem here if not check inhibitor switch and then solenoid hope this helps you

If you have it in 4 LOW, you would never need overdrive. Overdrive is a road high gear that you would use only in 4 HIGH (or 4H) on your shifter. 4L (or 4 Low) would only be used in a very slow speed hill climb. You would NEVER use 4 Low on the road.

The prob is a fragile wiring harness at the base of your shifter handle, the wirings easily break from movement when shifting from park to drive. The wires can be respliced or the handle can be replaced

I bought a 1996 Ford Explorer. I just got my transmission rebuild and it still seems like my car not picking up the speed properly? also the overdrive light constantly blinking when I drive sometimes. Do you have an idea about what the promblem might be?