Volvo 940 Ignition lights don't come on when car is started, and car loses power. RAC said alternator is not kicking in,new last year, can sometimes kick in when being driven.

the pointer is the hot ignition fuse
that indicates excessive current draw almost to the point of blowing the fuse
with the car stalling ( stopping /cutting out) I would be focusing the attention on the electronics of the vehicle in areas of the ignition control module or the ECM itself
there could be components that ore overheating and failing or shorting and overheating and failing
The ECM you can test by getting a known good unit and substituting it and the ignition control module can be like wise replaced or checked by an accredited auto electrician who has the test equipment
Lastly you can go to autozone and see if the fault codes can be read ( free) or to an accredited service shop that has experience on volvo cars ( may cost for the reading) and fix what faults show up

bulb failure warning relay has failed.behind your front ashtray last relay on the left .round one change it try on ebay.

U MUST LOCK ALL DOORS and unlock with key place key in ignition switch turn on but do not start wait three minutes or until security light goes off then start

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check for loose connections or you have a bad earth.

check the fuse .and all of the bulbs are working.if ok then change the brake switch.

you have to check you engine starter (dispositive that is made to turn on your car)

Hi!
Start by charging the battery completely. Then, start your car and while running, remove the NEGATIVE battery cable from the battery. If the car dies, your alternator is bad. If it keeps running, reinstall the battery cable and turn the car off. Check for something that's on that would drain your battery like a light in the trunk, glove box, etc. that wont shut off.

1st thing, check the relays, behind the ashtray, give 'em a gentle twist, while turning the engine.
Bon chance.

ok, this used alternator has bad diodes and will need them replaced. sometimes, certain technicians wont rebuild correctly. they just look over this vital part. i would return this alt.

Sometimes the fuse looks good,but replace it anyway,that sensor in under your dash,its red and round.