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Not seeing the light

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Dischord Explorer

Dischord

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Hey everyone um i have a small problem when i hooked up the new stereo i lost all my parking lights in cluding my dash lights but still have brake lights and head lights i checked what i thought were the right fuses and they looked fine is there any reason the parking lights would be effected by the different stereo???

need help any reply would be greatly appreciated.

i posted this msg on the audio forum but had no replys i really need help with this thanks guys

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Dischord Explorer

Dischord

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wow, my brother did the exact same thing last week with hes S15, installed a stereo and lost all dash lighting, don't know if hes fixed it yet.  :headspin: ill ask him tonight.

thanks heaps any info would be a great help

oh yeah the car is a 93 R33 4door gts25t

Dischord Explorer

Dischord

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i just pulled all the fuses and found one in the boot that tails lights but it effects all the parking lights. i replaced the blown fuse but it just blows as soon as i turn on the lights would changing the stereo effect this at all ?? its all i have changed electrically and i used all the original stereo wireing..

ferni Grand Master

ferni

Posted
Posted

You must of shorted something out somewhere installing the stereo - hence why the fuse is blwoing its drawing too much current from that fuse... unplug the stereo replace the fuse and see if it blows - if it doesn't either the stereo is doing it, or your wiring :rofl:

Dischord Explorer

Dischord

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You must of shorted something out somewhere installing the stereo - hence why the fuse is blwoing its drawing too much current from that fuse... unplug the stereo replace the fuse and see if it blows - if it doesn't either the stereo is doing it, or your wiring :rofl:

well it is the stereo as soon as i unpluged it the lights worked now how do i fix it can i just put in a bigger fuse or will this burn out other area's in the wireing ??

Dischord Explorer

Dischord

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Just a thought, but maybe your power wire for your stereo might be coming from the parker lights wiring. So to avoid this rewire a new line straight from the battery with a fuse. This might stop it.

would the parker lights be hooked up through the original stereo?? because i have used original stereo wireing which power wire are you talking about the the ingnition wire or the battery wire?

ferni Grand Master

ferni

Posted
Posted

When i was messing around with my stereo (after i'd installed it) the fuse went, i lost my brake lights and my dash lights i think, ended up being a fuse, not sure how it happened, but its common. I wouldn't just replace it with a bigger fuse. Triple check your wiring.... or it could be the headunit.

someonestolecc Grand Master

someonestolecc

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Posted
well it is the stereo as soon as i unpluged it the lights worked now how do i fix it can i just put in a bigger fuse or will this burn out other area's in the wireing ??

Please don't do this. I've had an electrical fire (from other reasons) and it's damn scary. You don't want this as the fuse serves as the weakest link, so basically it blows before the wires melt. You uprate the fuse and your wires may melt/erupt in flames.

What you might want to do is wire it straight from the battery as someone suggested, just make sure you have a fuse there, when I get a car I usually run 2 wires straight away, one into the dash which is usually about 8ga (or a bit thinner) and a 4ga to the boot for the amps.

I use the one to the dash to power everything I put in there, like EBC, head unit, gauges or whatever. This way you know where the power is coming from, what the wire is rated at, and what fuse you have on it (I also have fuses on each component where practical).

What I might suggest you've done is grounded your head unit into the lights, which will mean the stereo will work till you put your lights on (by turning your lights on or stepping on the brake, depending on which circuit we're talkin about).

The other possibility is you may have plugged the positive into that circuit, which I think someone mentioned above - however if you used exactly the same power wire as the stock unit this is not it.

The running wires yourself is a good idea if you just want to get it working reliably (remember to use a fuse and tape up all the exposed wires in your dash individually first though).

If you're really keen in finding out what happened however it might be worth to get a test light, and pull the fuse out that blew. Then get all the wires you were working with and test each one for current one by one (remember to have the car in the same electrical state as when the fuse blew, if that means it was in ignition with the brake pedal on then do that).

Note which ones were live and which weren't. Then put the fuse back in and do the same.

You should be left with one wire that behaves differently than the first time (ie either being on or off).

This should give you a better understanding of what the wire does eg. if it lights up when your car ignition is on or off and when your brake pedal is in, then it's obviously the brake light. If you've grounded it into that then you know why it's blowing. Process of elimination :rofl:

Good luck :wassup:

Dischord Explorer

Dischord

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Cheers guys all the feedback was very helpfull i figered out what i did and i earthed the stereo to the illumination wire for the original stereo (wich had no power running to it when i tested it ....until i turned on the headlights) anyway have sorted it out now thanks to everyone who helped me out cheers boys..

  • 2 weeks later...
R33S2 Grand Master

R33S2

Posted
Posted
I have the same problem with no dash lights or tail lights as i earthed the stereo to the illumination wire. The fuse blew but i can't fix it as it keeps blowing even with the stereo out. I think i may have melted a wire somewhere and it is goin to ground? N E ideas?

Sounds like you melted something all ican suggest is follow the sterio illum wire throught the maze but it looks like a full dash pullout might be in order to do that if you can test the illum wire for connectivity from fuse box you could allways disconnect it from illum harness and see if that fixes it. but its sounds like a real mess up and an autoelec job to me.

gtst25 Proficient

gtst25

Posted
Posted

GIDDAY,

I did the same with my s13 silvia - and then 4 years later with my r33.

I bet I know what it is.

When you check for power wires for your new stereo with a multimeter there will be a negative and a positive.

Great.

But when you turn on the headlights the negative will turn into a positive.

Bang. There goes your fuse.

I'm pretty silly as I have fallen for this twice.

Earth your negative instead - I earthed mine onto the Cover for the g/box near the shifter.

As for putting bigger fuses in DO NOT DO THIS unless you want a fire.

Nissan did a bloody great job with their wiring so please don't wreck it.

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