My HDD light isnt activating.

[sku77s]

MSI 970A-G46
Seagate 7200rpm 1TB HDD
Corsair 300r case

HDD light isnt working.
Everything else is.
Except front case usb as I dont have a header for usb 3.0 on my board. But I dont believe these are connected.

Built the pc. Could reversing the cord hurt to see if it was wired backwards? Just ocd and want the light to work. Help please.

 

[SuperSoph_WD]

Welcome to Tom's Hardware, sku77s!

I'd suggest you to consult with your motherboard manual and make sure you've plugged it correctly.
If that doesn't help, it might be a faulty LED or shortage in the wiring.
Consult with the manufacturer as well, they might be able to provide you with a replacement if the drive is still within the warranty period.

Good luck!
SuperSoph_WD