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[Percy!]

Installed a sub last night and all was fine to later try it and find it had blown its fuse.

I tried putting another fuse in and it blew instantly.

Inline there is a 70amp fuse (do plan to get smaller) and the amp has a 20amp fuse.

It blew the new fuse without me needing to power it up.

So where should I start?

[dontpannic]

Installed a sub last night and all was fine to later try it and find it had blown its fuse.

I tried putting another fuse in and it blew instantly.

Inline there is a 70amp fuse (do plan to get smaller) and the amp has a 20amp fuse.

It blew the new fuse without me needing to power it up.

So where should I start?

Look for any short circuits first mate - make sure there aren't any copper strands bridging where they shouldn't be, make sure any connections are insulated too. Sounds silly but also make sure that the Power and Remote 12v's are the correct way rounf. Thats where I'd start.

Hope this helps

Nick

[m3matt]

make sure you have a decent earth my mate cudnt understand why his amp was blowing.... his earth was wrappped round a plastic gromit ! LOL not saying ur this stupid, but the earth must be good!

[Percy!]

I will admit the earth wasn't the best, didn't think that would cause this.

Either way I will start with that when I get a chance.

[Big Walker]

make sure you have a decent earth my mate cudnt understand why his amp was blowing.... his earth was wrappped round a plastic gromit ! LOL not saying [ERRR] this stupid, but the earth must be good!

His whole Citroen is made of plastic, he'll only get a good earth from the battery traitor

[Percy!]

His whole Citroen is made of plastic, he'll only get a good earth from the battery traitor

I checked all connections and it was fine, so tried another amp and that was also fine.

So I went for the easy solution, I pulled the broken amp off the box and attached my spare (and better amp)

Thanks for the suggestions