ODBII port hookup

[1965 ssvert]

Getting close to plugging HPtuners into a LS2 converted 69 Camaro. Does the orange power wire going to the ODBII port need to have a 200ma fuse to protect the drivers in the HPtunerspro Interface? I noticed that certain wideband wiring configurations require a 200Ma fuse to protect the drivers in the interface. The ODBII batt. orange wire will be coming off an independant fuse block under the dash that is protected by a 30a circuit breaker and draws power straight off of the battery + terminal. I can place any standard blade fuse between it and the ODBII port. What is neccessary?...if anything.

[Montecarlodrag]

The standard fuse for OBD2 port is shared with the cigarette lighter, usually 20 Amp.
If you don't need to feed anything else from the same circuit, a 5 Amp fuse is good

[1965 ssvert]

I have a 2 Amp out there I will try first. If it blows...5 Amp it is, thanks! Does anyone know what the actual Amp draw from the MPVI Pro interface is? I would like to eventually match it as close as possible.

I am assuming the 200Ma fuse to protect the drivers in the interface is because a wideband is feeding the interface a power/signal vs. the power to the ODBII port is being drawn upon by the interface putting it at less of a risk.

[1965 ssvert]

I ended up using a spare switched ignition fuse space from the engine relay control center with a 10A mini blade fuse to power the DLC connector. When I get a chance to pick up some smaller ones I will step the fuse amps down to better protect equipment plugged into the DLC connector from potential damage. Plugged in the scan tool, it all worked. I then used the HPtuner interface to download the stock tune file with no issues. Thanks for the input!