What is the Electrical load limit for the DC GPS Accessory Plugin on a 2024 RT S2S?

[Ages]

I recently added on a docking station that has 2 USB both 2.1 amp and a cigarette lighter port. Power is provided via the DC GPS accessory plug on the right side of the Spyder (if sitting on it) just up from and behind the right front wheel. I'd like to splice in a dash cam system, the power box output is DC5V/2A. Will this overpower the DC GPS accessory port on a 2021 Spyder RT?

 

[Dansy]

I would just check the fuse, or the repair manual, great thing to have - 5 Amp for that 2024 manual.

On mine, I installed power distribution since I've got a lot more stuff now.

 

[Ages]

I would just check the fuse, or the repair manual, great thing to have - 5 Amp for that 2024 manual.

On mine, I installed power distribution since I've got a lot more stuff now.

View attachment 249219

I had seen that in the manual but I'm not sure exactly how to determine whether or not the load exceeds 5 amps. The USB port has two ports, both say 2.1 amp does that mean that use of one of them will be 2.1 amps and use of two of them simultaneously will be 4.1 amps? If I add the dash cam system to that I'll probably be above 5 amps, so I would assume it may be better for me to find another place to splice in my dash cam system. The dash cam system shows voltage requirement is 12-30V to 5V 2A so I am assuming the the dash cam system on it's own will draw 2 amps, am I understanding this correctly?

 

[DickB]

USB port current is rated at their 5V output, so a 2.1A output is 10.2W. As there is some loss in the voltage step-down electronics - say the port is consuming 12W - that would be about 1A on the 12V supply.

Fuse manufacturers suggest using a fuse rated at 125% of current draw, so with a 5A fuse the circuit should draw no more than 4A.