Relay from an Old Berekely Boy
I just wired my new RT with a Relay and Centech fuse block. Get a Bosch 30A, I use the wires from the rear Aux Plug. This gives me 30+ seconds of power once the Key is turned off.
Wire this way:
#85 & #86 power from the Aux Plug, or from the Right Parking Lamp. Your Choice
# 87 Power from the Battery, fused with a 30 amp fuse
# 30 to your Centech.
The inline fuse will protect your Relay and Centech, the fuses in the Centech will protect your (said items). My Heated clothes only draw 6.5amps, Zumo 3.5amps, Aux horn 9.8amps (when held for 10seconds). Even Motolights draw 5.1amps. Everything is protected by the Centech and down the road the 30amp fuse