Advice on painting an unpainted plastic part

[CJ5w4wdSmokyOnMyTail]

Thanks. So you did not do any sanding at all? Not even a wet sand on certain coats or the final clear?

Correct. No sanding at all - per the direction on the SEM adhesion promotor bottle.

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[Tackett1980]

If it helps, the last time I painted plastic pieces in my 350z, I did the following process:

scuffed heavy with scotch brite
Sprayed with adhesion promoter
Applied bondo
Sanded bondo until smooth
Sprayed three coats of primer wet sanding between 200-500g.
Sprayed four color coats wet sanding between 500-1500g
Sprayed clear coat, specifically the two part with the button on the bottom mentioned previously.

that clear coat always gave me a pretty serious orange peel effect and to finish it, I always did about four or five ultra thin coats wet sanding all the way up to 3k grit on the last coat. Then after sanding the final clear coat smooth hazy with 3k grit, I took some buffing/rubbing compound and a buffer and buffed it to a mirror.

edit:
A couple of old photos of the center console which I painted black. Hope it helps.