Help with amp and sub wiring

[owen18]

Hey guys,
Having a bit of trouble wiring up my amp and sub.
Ive got a 4 channel 400 watt soundstream picasso amp and a 600 watt SRW 1243 Clarion sub.
They are both in working condition as i have tested them in mates car although i had to replace the terminals on the sub. When i bought my car the RCA cables, power cord and ground cord were already wired up. Im using speaker wire for the remote on cord and speaker wire to connect the amp to the sub.
On the amp there is one led light (red means protect and green means its working). When i turn it on the red protect light comes on and the sub doesnt work. I took it down to autobahn and the bloke had a quick look at it and said it should be working. I am probably just going to buy an amp wiring kit and start from scratch but any ideas before i do that???

p.s. fuses are fine

[acarmody]

How is the sub wired up, because are far as I can tell this is a single coil 4OHM sub? Do you have two channels bridged for the sub and left the other two channels doing nothing? If you tried to connect all four channels to the sub it would just crap itself and go into protect mode.

[Tw1n Tur6o]

You could try different wires for the remote on cord. Its probably just the wire has snapped inside.

[SweetWagon]

You could try different wires for the remote on cord. Its probably just the wire has snapped inside.

Would not be the problem as the amp is switching on.

To me it sounds like the sub has been wired incorrectly

[trentvy]

its that or theres a short somewhere in the wiring causing the amp to go into protect mode.

[owen18]

How is the sub wired up, because are far as I can tell this is a single coil 4OHM sub? Do you have two channels bridged for the sub and left the other two channels doing nothing? If you tried to connect all four channels to the sub it would just crap itself and go into protect mode.

Yeh bridged channels one and two, got the guy to check this as well he said it was right. I thought it was the RCA cables but they worked fine with the same setup in my mates car. Is it possible that the power cord that came with the car is the wrong gauge or something and the amp shuts down to protect it self?

[holdenboy]

The amp wont automatically go into protect because of inadequate power cablng, it will go into protect when you crank the sytem and the amp wants to pull more current.

Could be a number of things, re-connect the earth to a solid part of the car (ie the seatbelt bolts) and sand back the area where the terminal connects the metal. If you have access to a mulitmeter check the voltage on the terminals (+ and -) and then check the battery voltage, it should be fairly similar. Also while youve got the bonnet open check the connection of the power wire at the positive terminal, clean it up abit too.

If still no go then disconnect the RCAs from the amp, and then turn the system on, if the amp works then its either the RCAs (probably not as you said they worked in a mates car) or the head-unit itself. You could also try plugging in an Ipod or MP3 player using a 3.5mm headphone socket to 2x RCA cable, then turn the amp on and see if that works.

[owen18]

thanks holdenboy i'll give it a try