Electrical short

[Steve T]

Hi,
I have an electrical short traced to the hazard light system (4 way flashers) and the light circuit, I still have a few more checks to do as getting odd results. It is the early type fusebox on a 1984 dg I have searched the wiki for inspiration and search posts but no luck yet. Every thing is functioning on the van without problem or blowing any fuses, although the battery slowly discharges which is why I ran the short test.

Could someone give the following a once over and perhaps suggest a poss cause or even a remedy if someone has encountered this before. I have a day off Wed as working tonight so will have more of an idea when tracing the fault back to whatever it is, the wiring diagram in the Haynes is not the best to follow but getting there slowly.
Done the elec short test on the crank / starter battery, Poss lead + on battery connected, Neg – disconnected with one wire of test bulb connected to Neg – terminal on battery and other wire connected on earth lead too body. (I believe that is correct) I have disconnected the leisure battery and checked that in the same way and all is ok, this is now with both connectors off so that system is ok.

I am getting dim lit bulb with pulsating brighter light. Voltage drop of 00.01 v on brighter flash, with fuse 9 removed (hazard flasher and radio) this stops the light.

With radio disconnected from connector block no constant on dim with pulsating brighter light, I am guessing when connected this may be security flashing light on radio, although it does NOT have one??

With hazard switch ON I am getting dim constant light, don’t know the voltage drop on that yet as tester lead pulled out of probe (fix that tomorrow)

With fuse 9 removed

Sidelight / headlight switch on I am getting very bright light on test bulb (guessing full 12v)

With door operated lights, drivers door and sliding door switched to constant on (doors closed) or switched to on for when doors opened, test bulb lights very bright, (guessing full 12v drop)

When headlight flasher is operated (flash)I am getting very bright light on test bulb (guessing full 12v) with the multi pin off of the indicator / hi – low beam / headlight flasher, test bulb with one wire too earth and other wire in connector block on one terminal test light bright (guessing full 12v) need to check out the colour of that wire tomorrow as I have run out of daylight. So the steering column switch is not the cause.

I have pulled multi pin plug from back of ignition switch and connected to new switch so that is ok as still getting the electrical short. ( I will replace any way as old one is a bit sloppy in operation)

This points too The lighting system, I think, just have to follow wires back Is there a relay for them. What is the relay shown in the Haynes, the 3 X-contact (load reduction) ?? Also above fusebox looking up to the left on side pillar there looks to be a relay on top of a unit , with some wires running to it what does that one do, nothing in the Haynes? or wiki that I could find.

Will up date with more info when I have run further checks, after checking if any one has any suggestions.

Thank you for reading

Steve