HiCustomer welcome to Just Answer!.
Fuse 8 of your 4-door Stratus feeds the output circuits of both starter and fuel pump relays as well as providing a feed to the ignition switch, which then splits it even more. If your fuse is blowing consistently, let's try this to weed things out a bit..
Locate and remove the starter and fuel pump relays from the underhood fuse block, the power distribution center (PDC). With both relays and the circuits Fuse 8 feeds disabled, the only remaining path to ground for this feed would be basic wiring outside the PDC or near the switch. Do everything you normally would when the fuse blows, including turning the ignition switch to the start position if that applies to see if the fuse holds.
Here's the wiring diagram for under the hood. Not shown is what happens at the far right of the diagram with the A1 feed to the ignition switch (the B
continuation icon), but it's not really important that we follow this circuit yet. We'll burn that bridge if we need to...
If the fuse holds OK (won't pop), replace the fuel pump relay only. Perform the same test. If it blows now, you know it's the fuel pump relay or the fuel pump output circuit that's pulling too much power. If it doesn't blow, pull the relay and install the starter relay.
Crank the engine at least 3-4 times with the starter relay IN and the fuel pump relay OUT. The engine won't run very long, but that's OK... we're testing the starter circuit for excessive draw without the complication of adding fuel pump to the mix. If it blows now with the starter relay installed, you've got a high draw on the starter solenoid circuit, the output from this relay.
Being a new starter, it may simply be a shorted wire leading to the starter solenoid. Disconnect the starter solenoid connector and repeat the test to see if the fuse holds.
It gets complicated if you find the fuse to hold OK unless all circuits are running. I'd be inclined to think the fuel pump is drawing a lot more power than it should at that point, but it can be measured with an ammeter if you have one around the house. Most digital multimeters also have an amps function, but it's often only about 10 amps... which is marginal for the meter's own fuse for this test.
Check it out and let me know what you find.
Talk in a bit,