Up to 11 quest not allowing me to harpoon

I'm doing the up to 11 alliance quest in Nifflevar where you get into a harpoon gun and hit the village below. I only see one harpoon gun and it's lever says I need a different control module than the one that I have. When I use the one that I have next to it, it says "You can't do that yet".

I remember having problems with this quest because I was trying to use the wrong launcher. Have you checked wowhead?

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Originally Posted by RedRocket1234

I'm doing the up to 11 alliance quest in Nifflevar where you get into a harpoon gun and hit the village below. I only see one harpoon gun and it's lever says I need a different control module than the one that I have. When I use the one that I have next to it, it says "You can't do that yet".

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The harpoon you need for that quest is on the northern building. The southern building's harpoon, with the lever, is for a quest you get later.

I have the same issue. Only there are no harpoons on the northern building. I found one down in the ocean which is actually usable, but I can't target anything from there.