Changing horns, help with plug please

[cups]

I'm trying to change out the stock horns. Got the stock ones out and they have "round" connector instead of blade type that is on the new ones. Anyone have experience or knowledge with getting a replacement harness to use?

Stebel replacement horns


Stock horn plug


Replacement connections

 

[The Car Stereo Company]

cut them off and use female spade connectors