His family request that those attending the service at Clydebank Crematorium at 11am dress in pink or colourful clothing as a mark of respect to the writer, actor and producer who was famous for wearing his salmon pink cords.
They have also asked that instead of flowers, mourners donate to the Motor Neurone Disease Scotland charity.
Tributes were paid to David who died aged 65 earlier this week after being diagnosed with terminal motor neurone disease.
He was the driving force in Scottish theatre and co-founded the ground-breaking 7:84 and Wildcat companies.
David was also behind the hugely successful “A Play, A Pie and A Pint” event at Glasgow’s Oran Mor that has since been copied around the world.