Im about to blow my fuse! (Sub Install problems) (REPLACEMENT WORKS!) - Page 2 - Saxperience

Coonper · 28th July 2008, 13:57

Quote:

Originally Posted by Oroblram

Thanks for all the help so far Coonper!

loudness is king

One sub and some boot space would be nice

I have the wiring kit that came with my active sub wired up atm, will get the specs when I get home.

Gratz on 4k posts btw

Right then. If you get you're money back on the vibe sub then give me a shout and i'll see what i can find you for that budget.

Something like this;
http://caraudiosecurity.com/shop/pro...s_id/4798.html

http://www.caraudiodirect.co.uk/asce...a3efd2cf245f55

http://www.caraudiodirect.co.uk/asce...a3efd2cf245f55

Powered by this
http://cgi.ebay.co.uk/JBL-GTO601-1-M...3286.m14.l1318

Or this:
http://caraudiosecurity.com/shop/pro...s_id/8037.html

Haha! 4,000 posts and "almost" 100 rep! Lol

Alarming_Sounds · 28th July 2008, 17:18

is your head unit earthed properly as if its not you may be trying to earth it down the rca leads. i have seen lots of radios just earthed down the aerial coax and this has corsed lots of problems.

Oroblram · 28th July 2008, 23:34

Took the unit back after work, tested it in store and it worked perfectly.

Got a new head unit with a aux remote on cable (Sony)
Installed and again as soon as the RCA wire makes contact with the amp the fuse pops.

Even tried with nothing connected but the head unit power (Neg, Pos, Ignition Pos, Remote On) thinking maybe a speaker was shorting. Same fuse popping fun!

I have a boot full of dead fuses!

Quote:

Originally Posted by Alarming_Sounds

is your head unit earthed properly as if its not you may be trying to earth it down the rca leads. i have seen lots of radios just earthed down the aerial coax and this has corsed lots of problems.

How do I earth it, where and what to?

How do I check this!?

RK_Audio · 29th July 2008, 01:45

sony probably wasn't the best bet for a head unit mate.....
this may be a silly question, but do you have a big enough fuse in it?

Coonper · 29th July 2008, 08:02

To earth the head unit, you find the big black cable which comes out of the head unit. You need to cut this, put a ring terminal on the ned, and earth it to the chassis somewhere. Ideally it needs to be as close to the head unit as possible. Although, personally i cant see this being the problem...

I wreckon the amps knackered!

As said, what rating fuses have you got in it? And did you buy the subs brand new??

Oroblram · 29th July 2008, 08:35

Quote:

Originally Posted by Coonper

To earth the head unit, you find the big black cable which comes out of the head unit. You need to cut this, put a ring terminal on the ned, and earth it to the chassis somewhere. Ideally it needs to be as close to the head unit as possible. Although, personally i cant see this being the problem...

I wreckon the amps knackered!

As said, what rating fuses have you got in it? And did you buy the subs brand new??

The sub was brand new, been back to the shop with it and they hooked it up and tested it Coonper. (Cant get money back since it works)
It worked fine at the store, Im really stuck now.
The sub powers up ok but as soon as the RCA touches the "IN" socket theres a huge drain on the battery (Lights go dim) and the fuse blows.
Only happens when the RCA leads are attached to the stereo.

So I cut the neg wire going to the HU and ground it?
Any ideas to a good grounding point near the HU?
One of the carpet nuts?

Oroblram · 29th July 2008, 08:37

Quote:

Originally Posted by RK_Audio

sony probably wasn't the best bet for a head unit mate.....
this may be a silly question, but do you have a big enough fuse in it?

Fuse is 25A, it came with the unit and the replacement fuse was 25A too.

Coonper · 29th July 2008, 08:45

The head unit shouldnt cause that problem tbh mate!

You firstly need to rule out the wiring to the amp. But with it only being 3 wires you cant really go wrong!

What you could do is...

Take the amp out and try running it off the battery in the engine bay.Get a positive power lead to the amp as usual, then ground the amp to the neg terminal of the battery, then get a small piece of wire and strap it between the remote terminal and the positive temrinal. You should now have power.

With this done, get the rca's in there and see what happens!

If it still does the same thing, then you know its the head unit! So then you can try earthing the head unit to something better!

It could be that the power cable has a small split in it and is touching the body of the car, causing it to short and blow the fuse.

Oroblram · 29th July 2008, 08:53

Im going to try hooking an MP3 player to it tonight and powering it with the cables that I have ran as normal. (With the HU turned on so the remote on is triggered)

If that works then it has to be something with the HU?

Coonper · 29th July 2008, 09:20

Quote:

Originally Posted by Oroblram

Im going to try hooking an MP3 player to it tonight and powering it with the cables that I have ran as normal. (With the HU turned on so the remote on is triggered)

If that works then it has to be something with the HU?

Good idea!

Oroblram · 29th July 2008, 11:46

Do you think there could be enough current passed down the shielded rca cables to pop a 25A fuse if it was running along side a power cable (even thou it isnt)?

If the neg (outside ring) of the phono plug was touching the back of the HU (oversized plug end) could this cause an issue?

Would the amp try to ground via the RCA cable if the amp was not grounded well enough?

Coonper · 29th July 2008, 11:49

Quote:

Originally Posted by Oroblram

Do you think there could be enough current passed down the shielded rca cables to pop a 25A fuse if it was running along side a power cable (even thou it isnt)?

If the neg (outside ring) of the phono plug was touching the back of the HU (oversized plug end) could this cause an issue?

Would the amp try to ground via the RCA cable if the amp was not grounded well enough?

Nah, i cant see that happening tbh. Like you say, try putting you're MP3 player into it via rca leads!

Oroblram · 29th July 2008, 12:07

Just got off the phone with Vibe, he says to switch out the RCA cable for a new one.

Coonper · 29th July 2008, 12:46

Quote:

Originally Posted by Oroblram

Just got off the phone with Vibe, he says to switch out the RCA cable for a new one.

Give it a go!

Oroblram · 29th July 2008, 12:56

Just picked up a new set of RCA leads. Going to try it tonight.

Coonper · 29th July 2008, 12:58

Quote:

Originally Posted by Oroblram

Just picked up a new set of RCA leads. Going to try it tonight.

Try it now!!!

Oroblram · 29th July 2008, 13:02

Quote:

Originally Posted by Coonper

Try it now!!!

Only so much you can do in one lunch break

DJDannyB · 29th July 2008, 14:06

lol, have you not tried a diff rca until now?

i would of tried that first mate, could well be dodgy.
still, dont see why the fuse blows

good luck!

Oroblram · 29th July 2008, 14:09

Quote:

Originally Posted by DJDannyB

lol, have you not tried a diff rca until now?

i would of tried that first mate, could well be dodgy.
still, dont see why the fuse blows

good luck!

Live and learn I guess

Thanks for the good luck, think I need it!

Oroblram · 29th July 2008, 19:26

New RCA leads = waste of money, still poped the fuse.

So much for the good luck.

Cannot test any more tonight since I am all out of 25A fuses....

Any more ideas?