little problem or big

G

Guest

Guest
Hi Guys
I have a problem (not new I hear you say and your right, fix one and another
comes to call).
The problem is with a fuse and I just wondered if it can be fixed without
the need for the Auto guy.
My 10A fuse NO 2 on the left located on the drivers side panel for the dash
lights keeps blowing.
This also knocks out the right hand rear tail light and number plate light
aswell.
In the manual it says it knocks out the clock but that has stayed on.
I fitted more fuses and they keep blowing.
The strange thing is the fuse only blows after a few minutes and not
straight away, weird I think.
I have done nothing new or messed with anything that would cause this so im
guessing its down to my luck again.
Can I put a 15A fuse in there and see if that works.
Any ideas on how to look for what is causing this.
Im just puzzeled as usual cause there are so many items connected to this
one fuse i dont know where to begin.
cheers
john 92HDJ 80 1HDT
 
G

Guest

Guest
Hi John,
Just a random quess, but do both the rear tail lights work - I seem to recall
something about if one of the bulbs goes it can cause the fuse to blow.
If I am just away with the fairies on that one, the next step would be to
check the wiring for your tow bar if you have one - problems with the circuit
for that could be causing the fuse to blow.
--
Regards,
Julian Voelcker
Mobile: 07971 540362
Skype: julianvoelcker
Cirencester, United Kingdom
1994 HDJ80, 2.5" OME Lift
 
G

Guest

Guest
Hi Julian
Thanks as usual.
Both , in fact all the bulbs are working fine including the number plate
ones.
Wiring for the tow bar O ok .
cheers
john 92HDj 80 1HDt
 
G

Guest

Guest
John,
There could be two reasons for the fuse is taking a while to blow;
a) something is switching on after some time after the circuit goes live -
eg electric aerial.
b) the fault is an overload not a short circuit. A short circuit will blow
at once but an overload is serious and often harder to find. This is
because while the overloaded the circuit may be producing heat, ie a relay
coil might be overheating and damaging the base.
If the fuse is 10A it will carry 100A for a very short time and the wiring
etc will not have time to heat up (adiabatic).
Time to blow for say, 20A is much longer and the wiring can heat up so no I
wouldn't try a bigger fuse.
Only thing to do is check the circuits out and like Julian said, towbar
electrics are often the problem, also look for chaffed and squashed wires.
Malcolm Bagley
Stafford, UK
1975 FJ45 Pickup (In Work)
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G

Guest

Guest
John,
Fuse No 2 protects the following circuits:
Right-hand tail light,
right and parking light,
license plate lights,
rear fog lights,
headlight beam level control system,
instrument panel lights,
clock,
glovebox light
If the clock is not affected, perhaps it's wired differently.
Putting a bigger fuse won't solve the problem onbly mask the symptoms.
Besides, if there's an intermittent short or overload, a bigger fuse
will lead to wire meltdown.
With a new fuse in place, try switching the items on one by one to see
when the fuse trips.
--
Rgds,
Roman (London, UK)
'92 HDJ80
On 10/6/06, John Byrne <[Email address removed]> wrote:
 
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