From the factory, the default is On. (lite off) There was a DIY around here somewhere to revers that though. If 99% of your driving is below 50mph, probably not a bad idea.

I'm in such a habit of cutting it off now that if I reveresed it I would contsantly cut it on

^ Too many friggin hills to drive with OD On too much.

So when exactly should you have the o/d on?

I don't use OD unless I'm going over 50mph on the freeway

And never when towing/hauling

So I should just keep the light off then when it works again? I drive around 55-70 most of the time.

Nope mine is on when I fire up the truck, I shut it off as soon as the truck is started. Even with the 4.56 it was kept off most of the time.

LOL yep it would mess me up as well, just a set pattern to it now.

So your orange light is on all the time then merc?

What color is your truck?

Moss green.