the guage uses all the same inputs. there is one input for the temp sending unit, you will have to wire a resistor in line to ground for the temp light. if you dont wire it up this way it will flash an open signal and you wont be able to use any other warning systems
the srx uses a temp signal to the box ,
you will just need to add the wires for the pickup and power them.
get the two different wire diagrams and trace it out, the wires are all there