What tool to remove these..?

Hi,
I do hope someone can help, please; I recently purchased my first MX5 2013 NC, and I absolutely love it and am annoyed I did not get one earlier (in my 50s) Also so pleased I joined this forum as I have learnt a lot, so thank you in advance if you can help with this?

From the picture below, what tool do I need to remove these fittings? I need to get them off as the relay switch on the bonnet latch is faulty, and I have a new one to replace it with.

Many thanks

Looks like a TRI WING style screwdriver but i have never seen them so big.
tri wings are usually on small electrical items as security bits.

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I’ve used a flat blade screwdriver on one slot of the three before.
Just make sure the blade is wide enough, so that it touches the opposite bore, then rotate it gently.
Hopefully if it’s not too tight, it will undo.

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They are pop rivets I think.

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Thanks. I have found out they are rivets. Maybe I will try another way :grin: