PCB

[HHSIII]

Is this PCB a M939 vehicle box? Understanding is that a 939 box can be used on a 800 series vehicles but a 800 series can not be used on the 939. Trying to figure out if this is a 939 box. Some other 939 boxes that I have seen had a CB in the box, This one does not. It has the two solenoids, two resistors, three diodes and a MOFET. Appreciate any help and comment.

 

[HHSIII]

The truck I am interested in using this particular PCB on is a 925A2 series unit. Here are some pics of the rebuilt unit. As found condition of the unit before rebuild was the solenoid coils were frozen and had low impedance. The 48.5 K ohm resistor was reading 4.74 K ohm. One IN4005 diode was parted (physically broken), one was open. The IRF 630 MOSFET was open. Finally, I found one ABS solenoid coil connection loose.
Not wanting to install this unit and smoke it or something else in the vehicle I was hoping to get some advice regarding if this PCB unit will work or is the correct unit for the 925A2 vehicle.
Any and all advice, comment, or guidance is appreciated.
Thank you, HHSIII