Not got time to test this theory out and it's a bit involved but maybe ;
- Create type in illustrator, convert to paths and just have stroke with no fill and copy x3
- To get some variance in the letterform shape use slightly different angled brushes for the stroke of each
- Colour one Red, one green, one blue
- Copy each version into photoshop and overlay them
- Play about with outer and inner glows for each to give a neon glow effect
- Change the layer style to screen to allow the overlap to show
- Mask off some areas and offset the positioning a little to give variance
Simples ;-)