W__How do i wire two pioneer GM-D9500F amps i only have two rca outputs on head unit one sub output that is being used with a D class mono amp for sub the other rca to one pioneer GM-D9500F amp but i have two pioneer GM-D9500F amps i would like to run both on 4 channels and amp all my car speakers ?

If the Pioneer has only one sub output connect it via a single RCA to the mono one. If it has two outputs (L&R) connect it to the L&R on the sub via a dual lead.
The other connections on the sub are for those amps without a dedicated sub output.
The manual for the sun can be seen online.

Yamaha YST SW205 Owner Manual Connections Connecting To Line Output pin...

if your sub isnt blown, i'd follow your own idea and look for a bad wiring connections, also what kind of head unit do u have? check the settings on ur head unit to see if there is a seperate setting for your amp/subs if it does have one, make sure it is set properly

if it does not have a setting like above, check the rca cable from the radio to tthe amp, and make sure that the rca cable is plugged in to " input instead of the output

if you are talking about the power and groung use atleast 4 gauge for the subs i usually use 10-12 gauge

check voltage on rca outputs on the radio and on the amp and if those are fine it might be your rca cables them selves

If by saying amp outputs you are refering to the RCA jacks on back of the head unit (Left and Right RCA jacks usually labeled FRONT, REAR, SUB, etc...) then you do have options even if your head unit doesn't provide a SUB channel.  These RCA jacks/amp outputs carry the signal (music or whatever) at a lower voltage (and is typically more like DC voltage as there is a ground reference which is 0 volts and signal rides on the positive voltage), providing a cleaner signal to the amp which does all the work.  The wires behind the amp that you connect directly to the speakers is typically amplified by the head unit itself and is a much higher voltage level and varies from negative to positive ( AC voltage.).

You could use the other channels (FRONT or REAR) if available, (a specific SUB amp output cuts all the higher frequencies out, passing just the lower subwofer frequencies inside the head unit).

if you want to strive for a more efficient use of your sub, use a low-pass/SUBwoffer filter (a crossover) in between the Head unit and amp, thus providing the amp with subwoffer signal, (or if for some odd reason you have SPEAKER level sub connections you can use a line output converter which will let you run RCA to the amp.)

Hope this helps u understand why I couldn't just say get a new stereo nor could I just say use splitters on available amp outs.

This one Wire should be for the +. Try connecting the + to the Head Unit and - to a Common Ground. At the Worst, You will Blow the Amp Fuse if not Correct. The Lead from the Head Unit is Only an Off and On from the Ignition. Please Rate My Response! Thanks!

This sounds like a problem with the head unit output to the sub amp. Are you using a Pioneer head unit? If so, you may have a problem with some surface mounted fuses inside the radio on the main board. Certain Pioneer head units have a common problem with these fuses blowing. They are fuses for the ground on the RCA outputs.

Let me know if this is the case, and if it is I can give you the part number of these fuses and tell you where they are located, but you would need good soldering skills to replace them. Also let me know what model number your head unit is.

Thanks,

Dave

That depends on which wires you are referring to. High level inputs or low level (RCA) outputs? If you are thinking about trying to wire the amp up to your Pioneer direct, ie; running the power and ground off of the factory harness, think again, you'll fry your electrical system. You need to run a seperate power kit (8 gauge minimum; 4 gauge pref), then run RCA's from the line level outputs on the Pioneer. If you are planning to run a sub with the Soundstream then run your RCA's from the Pioneer's sub output. Let me know if I can help you any further.

blue and white wire on a pioneer is usually the power antenna wire, most people use it as the lead for power to turn on the amp that is installed, the amp should be hooked up to the RCA jacks on the back of the player to the input RCA jacks on the amp. then the outputs vary, some amps are bridgable which means that you can hook up one speaker to both output speakers this will almost double the watts to the speakers. you must know which side would be positive and which side negative to set it up like this. also important is it a two or four channel amp. this all matters. if you can provide more info I can assure you the best hookup possible for premium sound.

Hi,

In most head units as in your case the Pioneer DEH-1800, there would be 2 RCA female jacks at the rear of the unit. These are your OUTPUTs.

While in most amps including your GM-5300-T, there would similar RCA jacks which would be your INPUTs.

You need to connect the output to the input using an audio cable terminated at both ends with RCA plugs. Further you need to connect the remote trigger on from the head unit to the remote/external amp to switch it on.

A more comprehensive connection diagram is available at page 6 of the GM-5300T Manual which may be downloaded from here.

Hope this be of help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.