Indicators and Hazards not working.

[CaptainHair]

I'd suggest you voltage drop test every part of the circuit that you can - e.g. from bulb to holder, from holder to any harness connectors, from connector to next accessible part of the harness. You need to have the circuit loaded for this. Basically measure the voltage between any 2 points & where the resistance is low (as it should be) the voltage drop will be almost too low to measure.  Test the +'ve and -'ve sides of the circuit.  A voltage drop > a few mV would suggest a poor connection & might lead you to find the 'green crusties' causing a poor connection. Either that or you may have a short to ground somewhere if a bit of harness has rubbed.  (Not totally sure that would cause the symptoms though).

You could jump the contacts on the repeater relay block to give a constant feed to the indicator bulb to make things easier. You'll need a multimeter (a cheap one for a tenner will do the job) and a length of wire with some alligator clips attached to extend your multimeter leads.

There is absolutely loads of info on the web about doing this sort of testing. Just Google 'voltage drop testing' & read as many pages / watch as many videos as you dare. Good luck!

Thanks very much, this is what I was expecting to have to do given that the problem had only gotten worse I was expecting loose/corroded wire somewhere. I started having a poke around wiggling the connections of all the bulbs and such with hazard switch plugged in to see if they came on. I knew all the bulbs physically worked and (probably) had a good earth as they light up with central locking.

But then the other day my indicators came back on entirely for a journey home when I had the heater cranked to max. I remember at some point reading about a relay that worked but was sticking in the cold. Since then I've had indicators almost all the time by keeping the relay warm from the heater and giving it a tap when its not working.

New relay is in the post, I'm expecting it to fix the problems If it turns out to not be the relay then at least it'll be the wiring to the relay in the fusebox, which is great news.

Thanks very much for the drop testing suggestion though, definatly would have been next port of call though I'll admit I wasn't looking forward to doing it in this weather! I'll come back and leave another reply when the relay has arrived.