Can't figure it out. Another one looks like miles, reads like 3675.

 

elapsed time...

clear it... it should read 00:00 and start it's way up from there

 

The other one with the miles is another Odometer

 

I'm pretty sure it's the elapsed time he's talking about bolty...

 

I am pretty sure he asked two questions, you answered one I answered the other.

 

my reading is that's a continuation of the first part...

 

Yeah, two questions. Thanks. How do you use the odometer though? There already is one. Hmm, may be use it for mpg calculation.

 

You can use it just like your dash OD, just hit the reset button when ya wanna clear it to 0 Miles

 

The ET is like an hour meter isn't it? It records only when the engine is running, or maybe when the ignition is turned on?

The odometer in the OH can be used as a number 1 or a number 2. The one might be used to track miles on a tank of gas, the other miles run on a trip, or over the course of a week/month/year/whatever?

 

The ET is an eraseable minute plus meter and it runs when the ignition is on regardless if the engine is on. Now our trucks do have a non-eraseable hour meter as wel that can be displayed on your dash temporarilyl. I forget the key sequence to get it to show up, though

and you are correct about the OH Odometer. You can use it for the tank or you can use it to measure a trip somewhere just like your dash one.