Reed Relays have specs for many different coil voltages like 5V or 12V and generally rated around 0.5A where the coil resistance is around 1K for 12V and 0.5K for 5V
Power Relays are the same and are generally rated up to 2A for signals and >2A for power.
Since 12V Reed Relays can activate at 9V, if you actually have 13 or 14V, one might put a 3V White LED in series with the coil to indicate active power Relay.
A lamp with tungsten has a surge cold current 10x hot current which can stress reed relays so LED is better with direct drive from logic up to 20mA for 5mm types.
Relay coils must have a reverse signal diode across coil to suppress voltage spike or transient when opened.