saab rear lights and reverse wierd shit...

[GearheadNY.com]

@slickshift42

Hey guys I have a 97 saab 900 t and all of the rear lights flicker (except brakes(that dont even work)). When i put on turn signal or 4 ways. Just the rear lights. I have taken out all bulbs and cleaned them and used a little bit of electrical spray. Nothing happened. Also when I apply brakes rpms drop alittle then spike a bit back to idle. also when i put it into reverse, (it is a 5 speed) without engaging clutch, it starts to stall out on me. Im just about to go check the battery for the alternator to see if that could be the problem and could be a vac line for the reverse but Im really stumped. Anyone have any suggestions I’d really appreciate it. - Thank you

check your grounds… all of them.