ke70 dash lights coming on with brake pedal??

[l1ttle_d3vil]

got a wee problem with the ke70 - all the lights work sweet as normal, apart from the fact all the dash lights will come on when i push the brake pedal.
My guess is a couple of wires are melted together, or someone has joined the wrong two wires.

Where's the best place to start checking?? anyone who knows a bit about the ke70 wiring have any pointers, maybe save me a bit of time and frustration?!

its a 1984 ke70 wagon if it matters. i know its a long shot but worth a try

thanks.

[big_boy]

take out all your rear bulbs & tell us what happens

im gessing one break light is missing an earth so is earting thro the dash light system after crossing over at the back lights

[l1ttle_d3vil]

ah you legend took the back left brake bulb out and it works sweet.
why would that be missing an earth? is it the white/black wire which should be the earth? any idea where the other end of that wire is?

[Zak]

it's the filimant shorting against the second one in a twin filimant bulb.

[big_boy]

never heard of that ZAC but maby

normaly is poor contact or a broken wire

[matt dunn]

Make sure the bulb has two contacts on the bottom the same as the rest,
sometimes people it a single contact bulb which joins the two together,

or sometimes it is just a faulty bulb.

It's a common problem we see at work with all cars.

[l1ttle_d3vil]

Make sure the bulb has two contacts on the bottom the same as the rest,
sometimes people it a single contact bulb which joins the two together,

It's a common problem we see at work with all cars.

thats it - checked the wire and it was earthed but the bult is a single contact. swapped it with the twin contact bulb from the drivers side and its sweet.
interesting something so simple can cause such major problems - I was thinking something alot worse
can this sort of thing cause indicators to flash quickly too? all 4 are doing it, but not the hazards. unless its just a coincedence that all 4 are going to blow soon

[big_boy]

a weak flasher will do that

[l1ttle_d3vil]

weird thing is now its only the right side flashing fast - they've all been doing it for ages now it all of a sudden changed.
thought it may be to do with the brake lights so I put all the bulbs back in exactly how they were before hand and the left one was still normal speed.

the only way I can get the passenger side to flash fast again is by removing the indicator bulb.
ive tried swapping the bulbs around (passengers/drivers side) but it doesnt change anything.

this sound more like earths or bulbs? or still a faulty flasher?

[big_boy]

bulbs being different/rong wattages or mabyt earth not so likley if there all going

[l1ttle_d3vil]

bulbs are the correct wattages and are the same as each other too.
where would be a good place to start looking for a dodgy earth, just follow the wire back from the indicator? or something in the fusebox/dash area?

if it was a faulty bulb, would unplugging / removing that bulb fix it?

[big_boy]

go round each earht with a muilty meter & go from each bulb to chassie something good & clean like a boot catch ect set the muilty meter to volts & check V.D

also if it was a faulty bulb take each one out & swap with a good one from the other side & see what happens

[l1ttle_d3vil]

check V.D

whats that?
its nothing to do with the bulbs, i've swapped them every way possible and doesnt change a thing.

[AE82 FXGT]

check V.D

whats that?
its nothing to do with the bulbs, i've swapped them every way possible and doesnt change a thing.

Voltage Difference?

[big_boy]

voltage drop

[l1ttle_d3vil]

go round each earht with a muilty meter & go from each bulb to chassie something good & clean like a boot catch ect set the muilty meter to volts & check V.D

ah thought so...are you talking about removing the bulb and checking the voltage at the bulb contact point? sorry, just a bit confused...not totally clued up with this part of it.

any chance you could explain a bit better?? thanks!!

[big_boy]

um if you put your muilty meter on 1-20v dc & put 1 lead on the earth point of the bulb holder & the other on a good chassie earth & see what they read it sholud be between .001-.5V the less the better

[thaphatty]

& check V.D

Venereal disease. always check for those.