Getting ready to paint my lower dash and the inside of doors. The dash I lightly sanded paint but not down to bare metal , and the inside of doors I took all the paint off. Im going to be using the laquer paint from NPD. My question is what kind of primer should I use on dash and doors / The inside of doors will be Emberglo and the lower dash will be Parchment. Does it matter what color primer you use ? What should I wipe the metal down with before painting ?