interior lights

[tenacity]

Hi people
Hope your all well and freezing outside working on your buses (as I am), it is a labour of love
T25 1.6td jx engine 1988
Right here is my latest dichotmy, the interior lights have decided to stop working, all of them. However, the cig lighter and stereo still work and I know these all run off the same supply and fuse 3.
Has anyone got any ideas, before hyperthermia sets in out here
Thank you Andria

[1664]

Sorry, bit late on the hypothermia front

all of them.

How many do you have? One over drivers door and one behind sliding door, or a caravelle with a few dotted about the rear? Illuminated mirror on the passenger sunvisor?
They are as you say on the same fuse as the cigarette lighter and radio so do any of them work if you switch them on manually rather than by opening the door(s)?
If the answer is yes then the switches in the door posts probably need removing and cleaning.
If the answer is some do, some don't then which do and which don't?
If the answer is none of them then do you have an electrical multimeter and know how to use it?

[tenacity]

Hi, 1664
I have one above cab door and 3 in the rear, one above sliding door, one opposite sliding door and one up at the top at the back.
None of them work and I have treid manually.
Yes, I have a multi meter but dont know how to use it on these. Please tell me.
Thank you for your reply Andria

[1664]

Remove fuse number three while you remove the light over the driver's door. On the side opposite the switch gently insert a small flat edged screwdriver and lever the edge of the light out of the hole and then remove it completely leaving it hanging by the wires.
There is two connections on the side with the switch, and one on the opposite side. The one on it's own is the 12v positive feed from the fuse, the opposite two are returns to earth, one directly to earth the other via the switches on the door pillars.
We shall assume (for the moment) that the return earths are sound as I can't see them both going open circuit at exactly the same time so we'll check there's 12v arriving at the single connection on the opposite side of the light.

Looking back at your previous posts I know you have checked the voltage at your battery when you had the problem with your glow plug relay - you need to select the same range on your multimeter now; marked as '20vdc' possibly? Black lead in COM, red in volt/ohms - not amps/milliamps

Making absolutely sure the light is hanging away from the van body metalwork put fuse three back in. If the single connection on the side of the light touches the van metalwork directly it will rupture the fuse.

Check the meter works by placing it on the battery like you were just checking the battery voltage as before. We don't want to be messing about completely oblivious to the fact your meter no longer works!!

Hold the positive red lead against the 12v single connection on the light and put the black lead on a known good earth; the driver's seatbelt fixing is probably your best bet.
If you get a 0v reading between the single 12v feed connection and the seat belt fixing then we have a broken feed and we'll have to narrow it down.
If you do get a reading of 12v or close then remove the black lead from the seat belt fixing and try putting it against each of the connections on the switch side of the light individually (keeping the red lead on the other connection of course) and see what you get.
Remove the fuse and replace the light into it's hole making sure it's fully 'home' and not likely to fall out on it's own. Replace fuse again.
Tell me what did what.....

You anywhere near Coventry? It would have taken less time for me to do this than to type it.....

[bigherb]

There is a connector with a red wires coming off it for the interior lights under the the dash close to the A pillar which might have become disconnected.

[edoh]

big herb -
just for a bit of orientation here -
for the life of me - i can't read haynes style wiring diagrams -
but can easily 'read ' your arrowed photo
is the big bunch of wires going off to the right to do with the ignition?
is the big black wire coming down(middle of photo) for the windscreen wiper motor?
and is the top bunch of multi coloured wires going down a long rubber tube for the headlights/lighting?
just knowing where to look would be a start!
edoh

[bigherb]

big herb -
just for a bit of orientation here -
for the life of me - i can't read haynes style wiring diagrams -
but can easily 'read ' your arrowed photo
is the big bunch of wires going off to the right to do with the ignition? Yes and Instruments/Dash Switches. Asuming RHD
is the big black wire coming down(middle of photo) for the windscreen wiper motor? Yes
and is the top bunch of multi coloured wires going down a long rubber tube for the headlights/lighting? Yes the lower one is for the Front lights etc. The higher one is for the rear light/engine etc.
just knowing where to look would be a start!
edoh

[edoh]

top man!

[tenacity]

Thank you,
for your replies. I did the multimeter test as suggested by 1664 and no power at all. I removed the fuse box and checked out the red wire and hey presto it had a bodged connection that had come loose. put the correct spade on reconnected and we now have lights.
Thank you and Merry Christmas

[1664]

[edoh]

errr... may be pushing my luck a bit here -
but it is the 'season of goodwill' - ahem -
in the big herb photo above of the fuse board -
does anyone know which bits of wiring from the back of the box are for the windscreen wipers /washer pump?
be most useful to know what colour wires n whereabouts as i keep investigating the permanent on washer/wipe problem -
so far checked fuses - tried 2 new relays - nennenenenner 19 -

changed the wiper stalk -
had a wiggle at back of fuse box - my one looks like this....



if anyone knows what colour/where the wiper wires are - be much appreciated -

[1664]

I'd start a new thread mate. Who's going to know this one's now about wipers from the title?

[edoh]

good point!