How long does it take to change a bulb in your heater dial area? i have one out and i want to know how long it would take

95 gl 18 in ADR Trama/Kumho Ecsta Supra 712 Aiwa HU and speakers Missin the contour Sold the BMW 328, lookin for an E36 M3 Daily: 1998 Blue GMC Sonoma, ZQ8 suspension cleared heads and tails Wheels coming soon. slowly modding