Volvo 850, trailer flasher lamp question

My 850's do not have a trailer lamp. What they do have is a lamp that comes on if there is a defective lamp or the trailer is not wired properly.

steve.

i have had the dash out and there is a bulb in the holder, it is a secondry lamp to flash when a trailer towed, maybe it is diff in the uk where i live, i have a lamp that comes on if a light goes out. we also have o fit a bleeper to the trailer wiring to bleep to tell if the trailer indicator lamps are working, but would be nice to have the lamp working, i have looked in the wiring diagram but cannot see it listed. maybe atrip to my local dealer may help.

None of my 10 Volvos including 2 850s had such a lamp. I don't understand the purpose of it.

hi setve thanks for that,

maybe i got it wrong, as you say the lamp comes on if bulb goes or trailer lamps do not flash, but thought it was a repaeter to tell if the trailer indicators were not working, but thanks for all the info.

pash

Maybe it's market dependent. In the UK there is a legal requirement, when towing a trailer, for the driver to be provided with confirmation that the trailer direction indicators are flashing. There are various ways of achieving this - including after-market buzzers etc., but the easiest way is to have an additional lamp on the dash which only flashes when the flasher unit is driving 3 bulbs (plus side repeaters, of course) rather than two. I don't know about 850's. but my 1999 (old shape) V70 came with a bulb fitted and all wired up.

I think (from memory - without going out to the car to check) that this extra lamp also flashes when the hazard warning lights are operated.

thats what i thought, but there is a bulb in the dash, which seems to do 2 jobs, 1 let you know if a bulb has gone and 2 trailer light repeater, but niether work, and bulb has not blown. i will maybe fit a bleeper and call it done. but thanks for all the help.