Hello,
I just purchased a 2005 E250 5.4L V8 windowless van. It has manual door locks and windows and no alarm system. I have started wiring an alarm system and remote start in but there are a few wires I am having a hard time with. This is my first large car project so forgive my ignorance if some of this is very obvious. I have uploaded the wiring sheet that was given to me by Crutchfield for the install. The alarm system guide pdf is too large so if you have any specific questions let me know.

1. All door trigger: My wiring sheet says it should be at the relay box on firewall behind the driver dash. I spent a good 45 minutes looking for a black and light blue wire but I cannot seem to find it. Does anyone know of another point I can wire this in or an easy way to access this wire?

2. Tach Sense wire: Wire sheet says this is at the PCM which is somewhere under the hood near the brake booster - I saw a couple videos where they briefly mentioned the location but did not show it and I am having a hard time finding it, is it behind some other items?. Also, I will have to pass a wire through the fire wall here and I had a hard time finding in the engine bay where I would pull from. If anyone has tips it would be appreciated, but I think Ill just have to figure that out myself regardless.

3. Parking light negative: My wire sheet does not have this wire listed, so I am not exactly sure where it would be. This wire should test negative when parking light switch is on.


Additionally, if there is an info source I can submit this wire sheet to for others to use let me know and I will upload it for others to use.

Thanks have a nice night.

N.P.

 

Welcome to the site.
We have full access to your schematics, but if you can post some images of Crutchfield's harness or connector views it would help pin down locations and possible color differences.

 

Sure here is the wiring for the system, i managed to cut the pages out that had to do with wiring and now it is small enough to upload

 

I sent you the PCM location/access illustrations, as well as the PCM connector pin out and circuit functions. If it helps, I'll look and send the trigger/lamp info..

 

Went to my spam folder, but I got it. Thank a ton, that looks promising. The lamp info would be great if you are able to find it. I also purchased the 2 OEM repair manuals on ebay today for $45 so when that comes hopefully I can get some info there too. Makes sense I can't see it, its behind the intake stuff.

Side note - my e250 has the bolts ground off on the metal plate under the steering wheel dash. I have been working around the plate and it is a pain in the ***. Browsing this forum, I saw a photo of someone with theirs shown and the bolts are not ground off. See this thread's photo with the metal plate in the background bolts intact. frustrating, wonder who did it.

 

The park lamps are chassis grounding, with power distribution as activation. I don't think Ive ever ran into an instance where the lamp control was a grounding interruption.

I found a door ajar switch VREF circuit off of the VSM that carries a BK/LB wire for door switch trigger.

I sent the park lamp schematic, door ajar, and connector views.

 

You have RKE?