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Two issues may cause this blinking light. One, no input received from the receiver, or two, the amplifier withing the subwoofer is damaged. For more information, please visit my website at audioserviceclinic.com. Thank you.
You got to connect the blue amp turn on wire. If still dont work. then you got to find the factory amp find the two wires that sends frequency signals to the amp. You will see a total of 7 wires. So you've got to use process of elimination. Use a multimeter.
1.Constant 12 Volt 2. Ground 3. Amp turn on 4. + output wires going to the + of the subwoofer
5. - output wires going to the - of the subwoofer 6 + input wires going to the radio harness 7 + input wires going to the radio harness
6 & 7 are like the rca's you plug in at the input of an aftermarket amplifier and and on the other end plug in the output subwoofer of the Radio.
So on a factory amp you wont see any RCA's its all wires. Once you find the first 5 just remember the last 2 wires.
If you want your radio to control the gain and volume of the Subwoofer get a long RCA plug it on the back of your radio that says sub output and then cut the other end of that RCA and connect the positive the + input wire on the amp and the negative to the negative input wire on the amp.
If you dont know whats positive or negative just go ahead and connect it and experiment. You will know if your in phase when the subs sound boomy. Then the connections are correct. If it sounds Tinney then the connection is out of phase. solder then tape all connections with black electrical tape. Dont leave any power wires exposed or else cause a short and blow fuses.
Your subwoofer probably has both high-power inputs and "normal"low inputs. The first are for receivers, which don't have link-level output for sub, so they are able to take already amplified signal as input. You need to use link-level input of your sub and connect it to subwoofer-output of your receiver. The output is marked as OUTPUT - Subwoofer and is black-color RCA plug (don't confuse with subwoofer INPUT under MULTI CH INPUT). Receiver has only mono output for subwoofer. If your sub has stereo input (white/red RCA plugs), connect just the left channel to the receiver, it will still work. Don't connect anything to the speaker output on the sub, you don't need that.
check for the power button is on behind the woofer or speaker,if ur speakers does not have switch hten select the volume control optin and click the properties and check the sounds by clicking the speaker images in that window.if u have problem again,askme through fixya again.
sometimes adapters do not work. this might work start computer without mouse. you may have to work with keyboard tab key as you press tab key you should see the icons highlighted install drivers plug in mouse to usb if lucky O/S will recognize mouse and setup