I got it today and the ap class 350 however it doesnt let me go to Northampton or those stations so what do I do?
The Steam version of WCML South does not include the Northampton Loop, so you won't be going there with the standard DLC. There is a 3rd party payware addition on Alan Thomson Simulations that gives the Northampton Loop, but note that it doesn't come with Quick Drives for the Loop, which was a disappointment for me.
Before you purchase something have a look at the Manual which shows what it does or does not include. https://store.steampowered.com/app/..._South_London_Euston__Birmingham_Route_AddOn/ The link to the manual is on the RH side.
Obviously whenever anyone buys anything they always read the manual first before deciding to buy... (not)! Would be interested to know if Quickdrive ever got added to the ATS Northampton Loop? (I have checked the manual and it does not say about Quickdrive)
i own wcml south full northampton loop and the ap class 350 and ap class 319 and dont work no scenarios
I find that if it's not in the product description then it is very unlikely that it is going to be in the product. The description is there for a purpose - to sell the DLC (or put you off it depending on your personal view).
The 319 and 350 will work on the Northampton Loop from ATS but you would have to make or modify a scenario.