three fuses

While checking my fuses looking for the infamous cigg lighter I noticed three fuses I have never seen before the are black and on the top have a symbol similar to a letter "T" with an arrow pointing to the top of it one of the three was blown wondering Wat amp it is and can I replace it with a regular fuse

What is the model year of the car?

2006 one of them is on the ignition I have a 15 amp in it right now just tryn not to burn it down

Pic

Thats a diode, the arrow shows the current path, will not allow current to flow the other direction.

Thats a diode, the arrow shows the current path, will not allow current to flow the other direction.

Ditto. Not a fuse.

so probablt not smart to use a fuse huh?

probably*

Nope, the diode is there for a reason. To prevent voltage backfeed and damaging sensitive circuts.

alright man thanks very helpful had a feeling there was a reason it was different

Update: thanks turns out I retested it and it isn't blown I just tested it wrong flipped over tester leads and sure enough its fine