Basically, I just bought an E6X from someone on the forums, who bought it from someone else on the forums. The original owner made the harness, and it is a pretty hack-job affair. Lots of unsoldered wire connections and general bad things. The worst one came when I was tracing out the wires. It appears the PWM output #2 was connected to a red wire that was labeled "connect to 12v supply". I am afraid that someone, at some point, connected this to 12v. What are the consequences of this, and how can I test it out to see if everything is working?
I just got this a few days ago and haven't even powered it on, and I am a total Haltech newb, so please be kind!

 

The PWM wires are pull to ground. Meaning they will become grounded when they are activated.

I doubt connecting it to a wire requiring 12V supply would have damaged anything. Aside from having whatever that 12V was supposed to power be powerless(ie. the ecu lol)......it should be fine.

If you want to test the PWM, install the ECU (or bench install it), hook up a laptop and set the correct PWM to something like a cooling fan. Hold a lighter to the coolant temp sensor if its on the bench with a continuity tester between the PWM wire and the ecu ground. If it gets continuity when the fan should come on - its fine. You could set it to any other function and test it as well....just thought of cooling fan first

 

What I'm worried about is that the wire was actually hooked up to 12V, like the battery. I'm worried about the ECU being fried, but according the the seller's post it was working when he pulled it to sell it, so hopefully thats right.