I have a vehicle tracking unit (GPS + Telecom) which needs +12/24v DC supply.
The +12v battery red wire comes to this point where it gets split between the relays and a fat wire harness (which goes to the ECU and other parts of the fuse-box).
Is it safe to connect the power supply to the +12v relay supply of a vehicle (headlamp relay to be precise)? I've noticed this terminal is connected in parallel directly to the battery of the vehicle.
The tracking unit has a 3A fuse inside across the input line.The unit draws around 250mA power from the source.