HELLO, welcome...
Well, it says on this page:
ME-AGS-N
www.magnum-dimensions.com
"The Magnum AGS is compatible with most major generators, including Onan, Powertech, Generac, Westerbeke, Kohler, EPS, Northern Lights, and most portable generators with electric start. Please check with your Magnum dealer for specific model compatibility."
So provided that Westinghouse 7500DF is on that list, fingers cross for now.. I would think your generator probably would have one of the 3 common types of wiring and probably would work fine as well, but may not hurt to check. I had a recent deal for a wiring in a soft-start onto an air compressor motor where it was a non-standard install, and the manual indicated for me to contact support about the non-standard install, so I did reach out to support, and they made special writeup edits on my diagram to show me exactly how it needed to wire in for my install. So perhaps if worse comes to worse, support could assist to help if a custom diagram may be required.
Anyways, moving on...
Looks like the manual says:
"2.0 Installation:
Installing the AGS is a simple process."
Whew, well good for that...
Make sure generator starts up without any other intervention (choke works, etc), only needs turn on and starts easy..
10-foot comm cable AGS to inverter, got it.
Ok, mount unit.
Remote temp sensor cable stuff, got it...
Plug in the network comm cable, check...
Don't plug in the terminal block to the AGS until all the cable connections are complete, got it...
Basically, the hookup of the AGS to the generator starts on Page 10
(2.6 Connecting the AGS-N to a Generator)...
Did you happen to review that guide already? The one I linked to above?
Here, I'll put the link again:
2.6.4 Common Generator Wiring Diagrams
Common generator starting/run/stop circuits can be divided into three major types:
1.) 2-wire control,
2.) 3-wire momentary control,
3.) 3-wire maintain control.
Refer to the following gen wiring diagrams.
16 Installation:
Two-wire control generator types:
-These generator types integrate the control circuits for start-up, running, and stopping (Figure 2-13).
-The generator starts and runs when two control wires are connected, and then stops when they are disconnected.
Three-wire momentary control generator types:
-These generator types use a 3-position momentary type switch that controls their operation (Figures 2-14 & 2-16).
-To start the generator, the switch is momentarily held in the START position.
-This energizes the ignition system and cranks the starter motor.
-Once the engine has started, the switch is released and returns to a center position (i.e., “momentary” run control).
-To shut down the generator, hold the switch in the STOP position until the engine dies.
-Once released, it returns to the center position (i.e., “momentary” stop control).
Three-wire maintain control generator types:
-These generator types use an automotive type starting circuit (Figure 2-15).
-To start the generator, turn the operating switch to a RUN position and then momentarily hold it in the START position.
-Once the engine starts, release the switch and it returns to the RUN position (i.e., “maintain” run control).
-To shut down the generator, move the switch to the OFF position (i.e., “maintain” stop control).
Are you clear which generator type your Westinghouse 7500DF is (of the above types listed), so we know which diagram to refer to next?
This is the decision, then we could move on once we know the above...
