Can you read the letters and numbers on the component.
The component is placed between the + and - 12v dc supply of two reallyes . I would like to replace this unit or be able to test it.
This unit controlled 2 more 12v Dc reallyes that are connected to a 12v DC hydraulic Pump that switches from forward and reverse.
I have replaced 4 diodes that we're open circuit
The numbers on the component are
07
K309
_________
9908
The K309U I can not make out if there is a U on the end of this number