Okay, here goes: I recently completed a 3-amp, one stiffening cap install in my 4Runner, and now, as I turn the system on, my Cap is functioning normally, but none of my amps have turned on at all. I had just the front speakers hooked up this morning, and they played nice, albeit a small buzzing coming from them. As I completed the rest of the system, I rerouted the main power wire to hopefully solve the buzzing issue.

I hooked up everything, and went to charge up the Cap, and from there, as I turned up the stereo, only the ultra-crappy stock speakers in the rear work (I have none in the front locations, and have yet to remove the rears; making this an all-custom-mounted setup.

My only guess was that maybe the Cap was sucking all of the power, but even when I unplug it, the amps will not turn on.

What gives?

 

-If u have a short in your speaker wires or speakers it will shut your amps. Or your amp turn on is not hooked up.

-Check your fuses, including the main one near the battery, i have seen them look good but when current is put to them they don't work.

-Check your grounds, make sure the wire is the same guage and you have a bare metal connection.

-Or, your amps are shot.

see if any of those do anything for you.

 

First get a DMM (digital multimeter), use the continuity to confirm your ground is good - or you can just meter the resistance to a known ground (it should be very low - 0.02ohm.) If the ground is found to be good, then test for voltage on the B+ line. If this is found to have voltage (11.5v or more) check to see that the REM is carrying 11.5v or more. If this checks out then there is no reason your amp shouldnt be turning on. Perfrom these tests on both amps while the HU is on.

If both turn on then it's on the signal side. Check to make sure that the RCAs are plugged into the correct RCA jacks both behind the radio and at the amp. If they are, then check to make sure no speaker leads are grounded to the chassis or are shorted to each other. If that checks out, check all RCA's continuity with DMM. If that checks out, try some new RCA's for good measure. If amp still doesnt play amp is blown.

 

lol, let's chalk this up to my being a noob when it comes to basic electrical systems... I am better off being purely mechanical, anyway. Give me a suspension kit that requires cutting and welding, I'm game. But, you give me an electrical system like a three-amp setup, and I am out like a fat kid in dodge-ball.

I had forgotten to include a relay for my pre-amps out to my amplifiers.

Now I get to deal with trying to find the right wire routing for the best possible signal clarity (I also forgot that you must try to keep both the power and speaker wires seperate.), as well as figuring out how to get my sub to play above 125Hz (my HU will only let me play up to that mark), as I am used to a sub playing at 250Hz and lower.