They look like ro/ws ro/sw to me. They will ultimately end up on the threaded connection
under the relays, but I am working to find out which studs.
So I bought the car and I noticed the breather hose was damaged. I replaced it and then the
engine speed sensor went out. It threw the check engine light on and I read the code with
my OBD2. (What was the Code ?) That was replaced and then the car had trouble starting
unless I wiggled the connector that I thought was the engine speed sensor electrical
connection. (What connection was it ?)
In removing the speed sensor I broke the voltage regulator clip and replace the alternator.
I was leaving McDonald's and as I begin to accelerate the car died. The check engine light
came back on and after wiggling that electrical connection (Which connection ?) it started
yet the check engine light remained on and it was behaving sluggish.
I drove it home and parked it. I remove the CV axle and that was the extent of what I had
done with it.
I then remove the wiring harness and repaired the broken and corroded wires.
(It is not possible to be sure, but this was probably the only electrical problem when you started working on it.)
I replaced the fuel pump connector as the Locking pin was destroyed.
I bought brand new coils and spark plugs and did an oil change. I did add fuel injector
cleaner into my gas tank and filled it up with 91 octane premium fuel.
That is what happened up until I got that code for low-voltage. I haven't done anything else
besides just look over things.
Removing the harness to inspect the wires and just looking into the vehicle.
That is the extent of everything up to this point. (You have also reported that you replaced fuses and at least one relay, and had other fault codes.)
https://www.passatworld.com/d2/attachments/25/25016-d1e6b3bab98027d29087f20ab3d022a4.jpgThose 2 wires run under the Intercooler onto 2 posts. The ro/ws wire runs the length of the harness, the ro/bl is spliced and one runs under the intercooler, the other to the radiator fan.
I ran tests on the alternator, battery and ground, and all were 12.10+-.02 key off
Reinstalled the harness and began working on reinstalling the terminal relays.
Ran some continuity tests on the coolant fan wire clusters. Traced down 3 of the electectrical connectors.
All passed in all pertinent pins. Yet I found the ground wire on the radiator fan is corroded right at the connection and bare wire is exposed. Spent the remainder of the evening trying to get that off. No luck yet, and the clip at the bottom snapped.
Having that ground shorted out could very have been the culprit preventing power.
The cv axle, I cut the remainder of the boot off. Just the inner was cracked. Inside the joint was still heavily greased and all the bearing ran smooth and fluid. I'm thinking getting the boot repair kit, and reusing the stock axle until I can replace both front/left side.
I know the battery is new, but it is low and if you don't charge it soon, it will be damaged.The battery is brand new.
And the fan wire is exposed right at the connection. To remove the fan do I need to remove the entire radiator?