Sub and Amp Not Working.

[Matta_88]

Got my new headunit this morning P77mp, so i fitted it with all the wires and adapters and tried to fit it to the back of the dash but it is hanging out and wont go in properly.

But the real problem is the sub and amp,

I have connected everything im aware of that i need to connect:

Remote from HU adapter to amp
Phonos from HU to amp
Power from battery to amp
Earth from underback seats to amp
Two wires from amp to sub

There is no lights on the amp at all and the sub is doing nothing at all.

The power cable was cut when i got it so i stripped it then joined the two together with electrical tape.

Can anyone help at all? im royyally fckd off as you can imagine as i dont no what the hell else to do

Any help would be cosmic lol

Matt

 

[cat171]

is the earth a good one ??

 

[The Boosh!]

sounds well strange... you sure you got a good earth?

 

[Hazza]

Where did u locate ur earth? Bad earth probably.

 

[The Boosh!]

i bolted mine to the underside of the back seats

 

[Matta_88]

How do i tell if it is a good earth? i have tried two places so far :S (thanks for quick replies )

 

[The Boosh!]

besst earths iv found are actually on the solid mounts of the car, closest to the chassis as poss. just any solid block of metal that you can screw down into.

 

[Matta_88]

Sorry to be a complete r****d but can you be really specific with some examples? lol

 

[Black-Clio-1.4]

Things to check in this order!!:

-Power is connected
-Fuse=OK
- Good earthing point! (Should Get A good spark if you touch it with power cable{Not Recommended})
REM

-Forget the REM untill you can turn the amp on! All you need to do to rule out the REM. (attach a small amount of cable to the Power terminal and touch the other on the REm Terminal)

if the amp turns On = REM Cable is faulty, connected wrongly at head unit or bad connection along the cable! Answer: Make sure you have connected it to a live feed at the head unit. After correct connection is found, test. Use a different cable if still faulty.

If Amp does not turn on: Check power and all fuses again and recheck earthing point!

PM for other help!

 

[Renshaw]

check the fuse in the power cable and on the amp mate.

 

[The Boosh!]

^^^ +1

 

[Matta_88]

How can i check them properly?

 

[Hazza]

Seeing whether ur amp and sub works?

Not sure if its the same for ph1s but on my car (ph2) there is a bolt where the left hand rear passengers leg will be, so directly below the front passengers seat. I used that

 

[Black-Clio-1.4]

How can i check them properly?

Voltmeter!

 

[Matta_88]

I havent got a Voltmeter, im seriously confused now lol

 

[Black-Clio-1.4]

Look mate. If you want it to work you'll need to go buy one!

 

[Yellow Dave]

If the remote wire is turning on the amp, then it will light up red/ show a fault on your amp if there is a problem with live/ earth connections. If the remote wire isn't turning on the amp then nothing will happen wether you have a good live/ earth or not.

Check you're remote feed and fuses before anything else

 

[brownale01]

owned myself

 

[Matta_88]

owned myself

?


-------

Trying other earth points atm lol

 

[Dink]

The power cable was cut when i got it so i stripped it then joined the two together with electrical tape.

did you use some sort of connector or just tape?

 

[Matta_88]

Just tape.

 

[christian rea]

did u connect the right remote wire? a gd place for an earth is on therear light bolt.

 

[Matta_88]

Its all sorted now

Just for reference i used the rear light bolt anyway!

And it was the 40 amp fuse next to the battery it was full on blasted, so grabbed a new pair from halfords and bobs your monkhouse

 

[hazzel_frazzel]

hang on your power wire is connected with just tape? I wouldn't be driving around like that mate. Get a new cable without a break in it

 

[Dink]

thats exactly why the 40amp fuse was blasted.

 

[Matta_88]

Why not? why do i need a whole new cable? can i not just rejoin it?

 

[Dink]

you can rejoin it but don't use just tape

use a sutible size through crimp and some heat shrink

 

[Matta_88]

Where can i get all the stuff mate? and how do i it?

 

[koi]

do you have a pic of where you earthed it to?

 

[Dink]

do you know any electricians? as they should be able to get what you need

 

[Matta_88]

Its working fine now mate ^^

--------------------

Nope not really, crimping isnt difficult but it is without the correct stuff, can i not just get one the metal gripper things that are cased in plastic, then you close the metal down on either side of the wire with pliers?

 

[Dink]

yeah there called through crimps but you won't be able to get one to fit your power cable and crush it with pliers

 

[Matta_88]

One was on it before, but it came off.

 

[Chris_Cliomk1]

u dont need a bloody voltmeter dnt be slly, just put two screwdrivers on the positive and negative points on the amp and touch the metal parts together very quickly, a spark means uv got power. I did it to myne earlier today when i was having problems an had no problems from doing it.

As for the headunit not sitting properly, try and get behind the dash and pull the cables as far back as u can, Usually they wont go fully in because there is a big lump of cables stopping it.

Anyway back to the amp, as said check the earth, if ur earthing it under ur seat mounts try sanding some paint off to leave bare metal then re tighten, check the fuses, check the wires are screwed into the amp tightly. And lastly, if still nothing check the rem cable.

My sub wouldnt work earlier today and it turnd out i had connected the rem cable to the steering control cable behind the hu lmao. Silly mistake but its done now.

Good luck!

 

[Chris_Cliomk1]

Its working fine now mate ^^

--------------------

Nope not really, crimping isnt difficult but it is without the correct stuff, can i not just get one the metal gripper things that are cased in plastic, then you close the metal down on either side of the wire with pliers?

oops forget my reply then lol.