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Discussion Starter · #1 ·
First off, new to this whole forum thing so if Im doing this wrong lmk.
Anyway, just got a "new" 1997 f250 7.3 and have some questions that I couldn't find answers to online..

The door, cabin, and exterior white-yellowish cabin light things (the lights next to the brake light in the middle of the truck, above rear window) turn on and stay on when the doors are open, key in or not. Is there a way to turn this off? Or is this normal..? They turn off when I close the doors.

The odometer doesn't work, I read the little plastic thing on the back of the interior fuse panel but couldn't find anything, anyone know what fuse is tied to the odo?

Any help is appreciated, thank you!
 

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Yes, it's normal for the cargo lights to be on when the doors are open. They're on the courtesy light circuit, essentially the same as this shows:

https://www.supermotors.net/registry/media/904459_1

To disable them, you'd have to cut a switch into that leg of the circuit, which passes under the driver's threshold into the B-pillar. But is it worth the effort? You could leave the doors open for hours (maybe days) before it affected the batteries. Even longer if you swap to LED bulbs or an LED CHMSL (which is what I put on all my trucks).

https://www.amazon.com/dp/B06XWK2SYQ

The odometer is part of the PSOM (Programmable Speedometer/Odometer Module). If the speedo works but the odo doesn't; either the display is dead or the PSOM is dying. Read these:

1997 Ford F-250 Big Red picture | SuperMotors.net

 

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Discussion Starter · #3 ·
Yes, it's normal for the cargo lights to be on when the doors are open. They're on the courtesy light circuit, essentially the same as this shows:

1983 Ford Bronco Diagrams picture | SuperMotors.net

To disable them, you'd have to cut a switch into that leg of the circuit, which passes under the driver's threshold into the B-pillar. But is it worth the effort? You could leave the doors open for hours (maybe days) before it affected the batteries. Even longer if you swap to LED bulbs or an LED CHMSL (which is what I put on all my trucks).

https://www.amazon.com/dp/B06XWK2SYQ

The odometer is part of the PSOM (Programmable Speedometer/Odometer Module). If the speedo works but the odo doesn't; either the display is dead or the PSOM is dying. Read these:

1997 Ford F-250 Big Red picture | SuperMotors.net

Thank you very much!
And yah, now that I think about it its probably alot easier to just jumpstart the truck in the very unlikely case I drain it dead it by leaving a door open.
 

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Does your truck have RKE? Look above the accelerator pedal for a module immediately forward of the dash pocket with 3 big connectors on the bottom & an antenna connector on the side.
 
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