power required for 12v 80 amp relay?

Hello, I need to power/activate an 80 amp relay (to turn on an 600 watt amplifier). I'd like to use the switched wire coming from my head unit (HU), but am afraid the current required to activate and hold the relay on and my amp on might blow out the HU. The relay will e something like this -will a typical HU switching wire for firing up amps work? -if not, likely amp requirements and wire gauge? Thanks much, D- P.S. apologies if I'm not using the right terminology.

When you get the relay, check the resistance across the coil and post that info here.  Most remote wires are capable of providing 200 milliamps of current.  A Tyco SPDT relay draws 160 milliamps of current.

Let us know how that relay holds up.

i am an idiot wrote: When you get the relay, check the resistance across the coil and post that info here.  Most remote wires are capable of providing 200 milliamps of current.  A Tyco SPDT relay draws 160 milliamps of current.

Thanks, Thats good to hear. I'd of thought a relay like that would be a pretty good load just to close it but, I don't really know anything about these aside from the obvious. I'll keep you posted,

Aren't we missing something here Craig? Why would you even need a relay for one amp. They have their own inbuilt relays or electronic switches. If you had multiple amps which haven't been mentioned you still wouldn't need more than about 2 amps. Our OP could try to wire it direct via a 1 amp fuse just to see. Or even meter the draw to trigger that amp, betcha it's about 100 milliamps.

His amp is staying on even without the remote wire being connected.

Are you doing your crystal ball routine again? I can't see where he says that.

Sorry, just read the previous posts from the OP. I'm with DYJohn here. The relay idea is going to be a train wreck.