M915a4 speedometer help

[Ferroequinologist]

Hey all!
I'm loving the M915a4. Just did a 1,600 mile trip from SC to NY to retrieve some track equipment I purchased at auction.

I have a question for another M915a4 owner- can you open your dash and let me know what the din switches are supposed to be on the back of the speedometer? The forestry service dropped in a peterbuilt speedo with the same dins as the one that is supposed to be in the truck- however the miles don't read and the mph reads 10mph low. I'd like to see if I can set this one and if it works right live with it. If it doesn't, there are some on Ebay for $400ish dollars. But I still need to know the din settings. The TMs have been no help.

Thanks!

 

[Ferroequinologist]

No one willing to send me a photo of the back of their speedo?

 

[simp5782]

No one willing to send me a photo of the back of their speedo?

I'll snap one tomorrow.

 

[Ferroequinologist]

I'll snap one tomorrow.

Thanks!

 

[simp5782]

Thanks!

915a4R2 speedo has 4 wires going to the cluster on 1 plug. No wire numbers or tags on the wires. All wires are white too.

 

[Ferroequinologist]

There should be a set of din switches on the back of the speedo, that's the info I need.

 

[simp5782]

There should be a set of din switches on the back of the speedo, that's the info I need.

 

[Ferroequinologist]

perfect!!!! thanks!