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    • By musgrove
      I'm nearing the finish line in an installation that includes a new HU with FT/RT, FR/LT RR/RT RR/LT, and a SUB output, plus an unmarked, unidentified in the manual, RCA output on the back of the HU next to the SUB output.

      I have a 5 channel amp that has Channels 1(white), 2(red), 3(white) and 4(red) marked clearly on the amp, plus a SUB RT(white) and SUB LFT(red) input, all input by RCA.
      The same amp has 4 sets of output terminals, 1 each for + & -. It also has 2 terminals for the sub (+ & -), which connects to the sub on R &L posts.

      So, first question:
      How do I run a cable from the HU, which is 1 RCA connection, to the AMP, which has both LT and RT RCA input connections?

      Second question:
      I also have the White, Grey, Green, Violet (+&-'s) hooked up from the HU to the wiring harness that goes to the speakers. The reason for this was that I have six speakers placements: 2 6.5" in the front doors, 2 6.5" in the rear doors. In the dash, I removed the tweeters that were in a plate and replaced them with Infinity Kappa20's midrange speakers that have bandpass crossovers that handle 550hz-7Mhz hooked up.

      Just to confuse things more, The manual for the amp shows The channel 1 speaker attached to the channel 2 output terminals(+&-) and the channel 2 speaker (+&-) attached to the channel 1 terminals. Channels 3 and 4 are where I expect them, 3 & 4. And then again for the SUB it has + and - terminals to go to + & - posts on the SUB.

      I've routed every plug in every location and checked each speaker, one by one by changing the fader/balance in different combinations to determine what's going on.

      What I sense I'm doing wrong is that I'm wiring RCA cables with both RT/LT wires into the AMP to the HU when both only want a single signal cable each going into each jack. One single wire each that somehow is carrying both the Positive and Negative in it, versus a double speaker wire that goes into a positive/negative RCA male connector.

      So that leaves the sub with one single output HU going to the AMP which has a R(white) and L(red) female connector. And then the 5th channel +&- going to the +&- on the SUB input.

      The reason I have the HU output speaker wires (white,grey,green,violet) going to the speakers is because of the Dash Unit speakers. They're tapped into those 4 in the wiring harness where I can't get to them, but run from the HU from 4 wires to 6 different speakers). Again, the dash speakers are 2" Infinity midranges with bandpass crossovers connected to each which came with them. I just noticed they are 2.5 ohm, and everything else is 4 ohm, which is worrisome.

      Is there a wiring genius out there that can understand what's going on and tell what I have wrong? There's also a whine coming from the front right dash speaker and possibly the right(passenger side) door speakers. I have the power cable far from the speaker wires on either sides of the vehicle. But I'm sure it has with the larger wiring issue at hand.

      Any and all help is greatly appreciated. This is a crazy puzzle. Here's a diagram I made to make it more visual:

    • By ObTechAudio
      Ok, I'm trying to do the big 3 on my buddy's full-size 1992 Bronco 5.8L Windsor, but I am absolutely stumped. The alternator doesn't have a post and plug like I'm used to. It only has two identical plugs. Any thoughts on how I can do the big 3? Where the (+) would go?
    • By scud
      Hi everyone  please any help
      How do you wire 2 dual voice coil subs that are 2 ohms and i have a 2 channel amp ( http://www.amazon.com/Lanzar-VIBE2102N-2-Channel-MOSFET-Amplifier/dp/B00BN7XQG4 )  i want to know how to wire them up to the amp at the 2 x 2400 Watts @ 2 Ohms RMS  i have come across this page http://a248.e.akamai.net/pix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/2DVC_2-ohm_2ch.jpg%C2'> but does that mean that each sub is wired for 4 ohms. Any help maybe i am missing something or its something so simple but this is my first build and the subs are 2 12" Fi BT series and this is the only amp i have for now. If this amp is not adequate after help with the wiring i would love to know any good deals on amps that could power these subs any help would be greatly appreciated.
    • By joe79
      I will try to post pics soon. The question is has anyone ever installed the big 3 on this model of a vehicle. 2009 Ford Explorer 4.6Lt? I have been looking at my electrical and there is ll kinds of run offs from the positive wire from battery. There are 2 that run from positive into the fuse box, and at least 2 more that split off into I haven't found where yet. Seem like a lot. My question is would it be OK to keep those running to where they are going and still run 0 gauge from Alt to battery using a bus bar or similar? Also with the ground question there are several split offs from the ground battery terminal to the chasey, should just through those on top of my 0 gauge ground? 
      Thanks
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