Hi all.
This is a bit of a continuatuation of a past thread.
some wiring burnt out months ago and turned out to be the wire from the dash light switch to the dash lights. replaced it and the switch burnt out.
replaced the switch with a new one it too stopped working after 30 sec. no smell though. checked the wiring and it is good. plugged it all in again.
still did not work, but was getting hot. the little copper brass/shaft pivot in the wheel at the bottom of the shaft burnt my hand.
where is such high voltage coming from to do this. can i put in a regulator or fuse, but will it keep burning out?
How can i fix this so i can have dash lights.
mark
Volkswagen in their infinite wisdom decided the dash lights would be perfectly fine to run unfused atleast in all air cooled stuff, I bet a T25 is
still the same (dash light wiring straight from the switch to the bulbs?
So if ever there's a problem there, it just melts wiring and eventually burns out the rheostat in the light switch.
I run an inline fuse on all my VWs for the dash lights because of this.
You would have a dead short there.
I assume a T25 still uses those crappy spring loaded BA7S bulb holders for dash lighting?
They often break internally and cause a short.
T25 arnt known for there headlights.
At least fit relays,have a look.
http://members.ozemail.com.au/~pjlander/Headlights.htm
dunno if you can get in Oz but P45t bulbs are H4, for good brightness, but fit the old P45 3 prong arrangement.
As for dash lights they should blow quite easily and before any fuse would cos it's only a 5watt bulb so less than 0.5amps being drawn. lowest fuse
rating i've seen is 2.5A. S'pose it will stop fires from a wire shorting tho 
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I just repaired the wiring on my 1990 T3 dash lights - it appears to me that at some stage the dash lighting stopped working so someone just ran
another wire with an inline fuse from the switch to the plug on the back of the gauge cluster - it worked fine... but it would have been easier if
they had replace the factory fitted fuse on the top of the fuse box 
I don't have a wiring diagram for the T25 but if there is no fuse (and it sound's like there isn't) then I would recommend fitting one ASAP. The
dash lights should not draw much current so a 1 amp fuse should be sufficient. In-line fuse holders are easy to get - any of the auto parts places
should stock them.
R 
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That's correct. They all had the 3 prong globes. P43t Pre 1980 had the P45t |
this means I meant get P43t bulbs but if thats whats
in there then my apologies.
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| Originally
posted by ratty 63 I just repaired the wiring on my 1990 T3 dash lights - it appears to me that at some stage the dash lighting stopped working so someone just ran another wire with an inline fuse from the switch to the plug on the back of the gauge cluster - it worked fine... but it would have been easier if they had replace the factory fitted fuse on the top of the fuse box I don't have a wiring diagram for the T25 but if there is no fuse (and it sound's like there isn't) then I would recommend fitting one ASAP. The dash lights should not draw much current so a 1 amp fuse should be sufficient. In-line fuse holders are easy to get - any of the auto parts places should stock them. R |