The standard indicator/dip (and also the wiper) switches both need to be bent into an 'S' profile in order to clear the dash.
Some years ago, the contacts in my dipswitch burnt out because I replaced the old sealed-beam headlamp units with Halogens but didn't fit relays to carry the higher current - expensive mistake!
Here's a picture of the old (left) and new (right) switches. Bending the shaft isn't hard, but it's best done smoothly and in a single action, you don't want to be bending them back and forth or the tube will fatigue and break
When it comes to replacing the rocker switches, you shouldn't need to fit relays if the new switches are capable of carrying the same or higher current than the old. When I did mine I used the posh
Professional Toggle Switches from Holden
