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Thread: How To Stop Fuse-Box Melting

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    VL Berlina 5speed's Avatar
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    Default How To Stop Fuse-Box Melting

    well last week i changed a fuse on my fuse box the 1 for high beams, i put the recomend 15smp one in, and now i have notaced its started to melt . i cant remba what size fuse was in b4 and i was wondering that if i put a 25 in would i run a massive risk of my cables for the lights melting and setting on fire???

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    Quote Originally Posted by VL Berlina 5speed
    well last week i changed a fuse on my fuse box the 1 for high beams, i put the recomend 15smp one in, and now i have notaced its started to melt . i cant remba what size fuse was in b4 and i was wondering that if i put a 25 in would i run a massive risk of my cables for the lights melting and setting on fire???
    IF you put in the 25amp fuse nothing would happen but if you had a short ect. the fuse may not blow and yes your wires may melt/catch fire first!!

    Also some cheap fuses melt or the fuse holder, the only way is a relay with a H/D inline glass fuse holder..
    I was confused now I'm just not so sure!!

    RIP Peter (perfect) Brock....

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    Quote Originally Posted by mag
    IF you put in the 25amp fuse nothing would happen but if you had a short ect. the fuse may not blow and yes your wires may melt/catch fire first!!

    Also some cheap fuses melt or the fuse holder, the only way is a relay with a H/D inline glass fuse holder..
    glass fuse holders where are these from and how much? would i place it b4 the main fuse boxes fuse or afta b4 the light?

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    and whats the chance it would short out? im more willing to take the risk of a higher fuse, and keep my fire exstingusisher ready

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    Quote Originally Posted by VL Berlina 5speed
    and whats the chance it would short out? im more willing to take the risk of a higher fuse, and keep my fire exstingusisher ready
    It will only short out if there's a problem-wires touching metal ect..
    I was confused now I'm just not so sure!!

    RIP Peter (perfect) Brock....

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    VL Berlina 5speed's Avatar
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    Quote Originally Posted by mag
    It will only short out if there's a problem-wires touching metal ect..
    hmmm ill take that chance, if worst happns ill have 2 run some new cables. and ive got a fully spool of quality cable here anyways, 50mtrs or so left on the spool after i did my sound system

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    Quote Originally Posted by VL Berlina 5speed
    glass fuse holders where are these from and how much? would i place it b4 the main fuse boxes fuse or afta b4 the light?
    Best way is bypass the standard high beam fuse an replace with the H/Duty inline glass fuse holder or if you want inline H/Duty blade fuse holder but then you still can melt the blade fuse, at least it won't be melting your fuse box..

    The fuse should be the same amps rating as the factory fuse was..

    Auto parts shops stock them..
    I was confused now I'm just not so sure!!

    RIP Peter (perfect) Brock....

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    look under the fuse box , it will tell you what size fuse should be there ,im not going outside to look for you ,

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    Quote Originally Posted by gungazza
    look under the fuse box , it will tell you what size fuse should be there ,im not going outside to look for you ,
    its 15, but the fuse holder rail starts to melt and the fuse melts into the connector and cant be renoved,

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    well have you got origional lights? because if you do then there must be somethign wrong down the line. but yeah just bypass the fuse and get a stand alone fuse and just wack it somewhere next to the fusebox
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    have you replaced your highbeam globes recently? if so they may be the incorrect ones and drawing too much current. if not they may be stuffed and still drawing too much current. i'd check them and see if theres any faults. if it was me i'd probably replace them anyway and see if you keep melting fuses.

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    Red face

    what year is your car mine is 87 and not got eny probs my bro had a 86 and had the same prob the whole lot melted

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    The cause of the melting fuse boxes in VL's is that often you find the wrong globes installed into the high beam side of the circuit. The globes should be only a certain wattage and no more!!! I would be pulling my globes out and checking the wattages are correct and even the low beam side to make sure also that these are the correct wattage globes. If all is correct and the corect wattage fuse is installed there should be no probs. Its only after people have fiddled and changed things do problems occurr. My bet is the wrong wattage globes are fitted! DONOT put the 100watt ones or increase the fuse capacity. They will melt the wiring and I've seen a whole fuse box melted by them and not just a single light circuit. BE WARNED!!!

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    well i recntly replaced a highbeam globe because mine stopd working, i got 1 from a self service wreakers (u pull it) and it was out off a vl so i just assumed the wattage was right. i will check what wattge it is later on. and what is the factory wattage globes??

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    The fusebox just tends to do it over time...mine was pefect when i bought my vl, never changed a bulb but it started melting...the fuse holder cant handle the current draw so it tends to melt the fuse and/or the holder....i just bought an another rail 10 bucks from autobarn (4pole) connected my headlights, highbeams, and soon my a/c (it's starting to melt the box now) to it and no dramas yet.

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    Quote Originally Posted by VL Berlina 5speed
    well last week i changed a fuse on my fuse box the 1 for high beams, i put the recomend 15smp one in, and now i have notaced its started to melt
    Check that your headlight relays are OK. Sounds like you could have a dodgy one. I'd put another relay in the circuit (between the original relays and the headlights) if you wanna be certain. This will take all the load off the original items.

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    Quote Originally Posted by clixanup
    Check that your headlight relays are OK. Sounds like you could have a dodgy one. I'd put another relay in the circuit (between the original relays and the headlights) if you wanna be certain. This will take all the load off the original items.
    check? like follow al the cables and look 4 melted spots? or shorting out possible spots?
    ive put a 30 amp in and its seem to be ok hasnt meltd but ive havnt been on a lot night crusies lately where ive need 2 used them (in the hills)

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    Quote Originally Posted by VL Berlina 5speed
    check? like follow al the cables and look 4 melted spots? or shorting out possible spots?
    Check the relays. They're in the fuse box.

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    VLs melt fuses all the time. You are lucky the switch hasnt melted. this happens when fuses of a higher rating are put in instead of the 15.
    Even when headlight globes are 'upgraded' they can melt.

    An inline fuse will fix this. Or a pcb board instead of the plastic ones. they are on ebay and look pretty cool too!

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    In my old car I had new cables run for the headlight circuits, another relay and larger bulbs/ fuses. No melting whatsoever.

    This time around I'm going the PCB rail and go from there.

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    Relays are a good bet then you can use much higher ratings, bit fiddly
    though to trace all the wires through. The original fuse holders arent
    well designed and just dont hold the fuses tightly enough, some people
    also end up with overspray when steam cleaning - which, I might add is
    a no no if you go near any electrical connectors.

    There are heaps of VL's around with standard sized bulbs and they still
    end up with warped fuse holders, it seems the spades get slightly tarnished
    and corroded from any moisture and this results in higher resistance, once
    this process of heat buildup continues then it can cause a type of
    thermal runaway effect until it continues along the rail, generally towards
    the EFI fuses. If it does that then you can expect occasional erattic
    ignition operation and various cutouts...

    The earlier VK's very rarely had this problem, of course those motors had
    much better air flow around them, but still it has happened as I've been
    contacted by a few VK owners. Few people have also dropped an RB30
    into the VK and even put a VL nose cone on, makes one wonder when
    I expected VL's bodies are just so cheap and some with fairly reasonable
    fuse rails already there...
    Regards from


    Mike
    Perth, Western Australia
    Commodore VL Fuserails that wont warp or melt !
    VK/VL/VN/VP FuseRail upgrade that wont warp or melt

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    Quote Originally Posted by Mike_M
    Relays are a good bet then you can use much higher ratings, bit fiddly
    though to trace all the wires through. The original fuse holders arent
    well designed and just dont hold the fuses tightly enough, some people
    also end up with overspray when steam cleaning - which, I might add is
    a no no if you go near any electrical connectors.

    There are heaps of VL's around with standard sized bulbs and they still
    end up with warped fuse holders, it seems the spades get slightly tarnished
    and corroded from any moisture and this results in higher resistance, once
    this process of heat buildup continues then it can cause a type of
    thermal runaway effect until it continues along the rail, generally towards
    the EFI fuses. If it does that then you can expect occasional erattic
    ignition operation and various cutouts...

    The earlier VK's very rarely had this problem, of course those motors had
    much better air flow around them, but still it has happened as I've been
    contacted by a few VK owners. Few people have also dropped an RB30
    into the VK and even put a VL nose cone on, makes one wonder when
    I expected VL's bodies are just so cheap and some with fairly reasonable
    fuse rails already there...
    how much are your fuse rails up 4? as it looks quality and urve got some nice feed bak on other sites. i might be interssted in 1 later on when i get some other things fixed first.

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