Testing of new wire harness

[CloedFL]

Dear all,

just finished installing the engine and the wiring harness and i have some questions marks if everything is correct w/o any short circuit.
I used a power supply to check the my harness and tested / identified the following:

Key in "off" position:
no current flow, constant 12 V with 0 A

Key in "ignition position":
voltage drops to 6 V, 5 A constant current, power supply in overload. What is consuming the power?
--> electric choke is getting hot
--> ballast resistor is getting hot
--> wiper motor consuming current --> i assume it its currently not in the park position

After excluding all of the mentioned above, i was able to get back to the 12 V with 1 A of current.

Question:
What would you expect in that situation?
How do you test your wiring before attaching it to the battery ? What would be a safe way?

[Nacho-RT74]

where are you reading the 6 volts ?

Wiper gets power in RUN no matter if spining or not, just that when parked, a cam inside cuts the power but one wire keeps alive ( Blue I think )