Sorry no diagram, just found the list via this sites search.
Here is the actual ground list:

EA Front Right Fender
EB/EC Left Side of the Cylinder Head
ED Front left Suspension Tower
IE/IF Behind the Combination meter
IG Right Kick Panel
BH Under the Left Quarter Pillar
BI Lower back panel
BJ Under the Right Quarter Pillar

 

All good, thanks!

 

How did you power & ground your amp?

 

My amp is powered by 4 gauge wire coming from my battery all the way to my amp in the trunk for my sub, which i grounded to the frame of the trunk.

However my speakers are just connected to my head unit (not factory. Its a kenwood). Would my sub amp have anything to do with my headunit connected speakers cutting out?

 

No inline capacitor?

Does the music cutout when you hit any bumps? What is battery voltage at idle? Could be loose ground or power wires.

Did you use a lock washer with the ground? Did you sand the stud to bare metal?

 

No inline capacitor, and i sanded ground points with a wire brush. However i did not use a lock washer for the connections, i could go and get some from home depot in the morning and test it. Battery voltage at idle is around 14.6v to 14.7v. When bass note hits it drops to about 13.7v 13.8v ish volts. I checked amp ground for my sub, and its showing a proper 14.6v with the meter.

Do you think it could be related to my wire harness for my headunit or something? I get slight headlight dimming but only the speakers being powered by my headunit cut off for bass notes. Altho the radio never losses power during this, only speakers briefly

 

I’m running 4ga OFC power to the trunk also. 3500w peak amp. No issues on stock alternator. Do you have a battery light when you installed the high output alternator?

 

No, no battery light, however weirdly enough the voltage doesnt drop below 13.7v when a bass hit rolls in and it shoots right back up to 14.6v. I checked the 2 grounds i upgraded (battery neg, and engine ground) which all showed normal voltage when i used a multimeter. Im afraid it might be a wire or ground related to the harness thats attached to my head unit or something

 

I think it’s wiring from head unit to the speakers. Loose wires? Bad connection?

Or, Are the speakers you installed rated capable to be run off the Kenwood? My setup I hooked up all the speakers to the amp.

 

No separate multi-channel amp for speakers. speakers are a pair of 40w rockford 6 inchers as well as another pair in the back, same rms, and 2 tweeters.

The harness is what im thinking about to, im gonna pull out the head unit and redu the connections for the headunit harness to see if it does anything

 

Double check the harness. Did you use splices for the harness or is it soldered?

 

Did you use a commercially available harness for the Kenwood and/or for the speakers? If you did, IMO a little contact cleaner and dielectric grease on the contacts go a long way to keep them in top shape. Otherwise dirt, moisture, etc can prevent a clean connection especially in a 20+ y.o. car.

 

Ill give it a nice scrub on the contacts some more, mabye ittle help. Got a lithium coming in from glowe, but i dont know if that would do anything to help my issue, kinda scared of stressing my alternator out if its improper wiring. If its doing this on a 200w amp its not gonna be able to supply 2800w from a jp23 im wanting to use

As for the harness, im not totally sure how they were connected. Previous owner put in that headunit, ill take it out tomarow when i have the chance. Trying to balance work and this car issue lol

 

Consider adding the capacitor for good power.

 

I was told to stay away from them except for super caps, do they make that much of a difference?

 

You can always add it in the future. You’ll know when it will be time to add one.