Some info!
I'm just cutting and pasting this from the e-mail that Rod sent me about it. At the end I'll add my comments to it!
"www.autostart. ca is the web site to hit. Autostart is the name of the
remote starter, and its a pain in the *** to hook up to a Dodge diesel. But
it does work well, once the install is complete.
Installation wise, you'll need three relays (not included with the kit) as
the Wait To Start light is positive ground, but the remote starter is
looking for a positive signal. If they have power locks, they'll need two
more relays as the locks are negative fired, and the remote starter sends
out a positive signal to the locking mechanism. Its also wired into the
tach sensor signal from the wiring block/computer thats tucked in behind the
air box. You can wire the wait to start lead off of this block as well. We
went with the actual dash light wire, because we didn't know about the
block. Doesn't seem to make any difference in the operation of the starter.
Otherwise, the install is pretty straight forward. Its wired into the park
brake, dome light, dash lights, and the signal lamps/clearance lamps (if you
have them). Autostart only includes a wiring diagram for what the remote
starter needs, they don't include any specific instructions for the vehicle
its being installed on. You can call them though, if you are a reseller,
and request the wiring diagram for a specific vehicle.
Operation is kind of a pain, but I think once I get used to it, it'll be ok.
To arm the starter:
1) With the truck running, turn off the head lights, and put the parking
brake on.
2) Hit any button on the remote starter. The signal lights/clearance/dash
lights will flash.
3) Turn the key off. The truck will stay running.
4) Get out of the truck. This triggers the dome light, and sets the remote
starter up.
5) Close the doors, and poke any button on the remote starter. The truck
will shut off and the starter is armed.
6) You can then lock the truck with the remote starter, if you haven't
already.
7) To engage the automatic starting feature (it'll run the truck every 2
hours for 5 minutes), hold the start button down until the park lights go
out (approx 5 seconds). Then release the start button. The lights will
flash three times, and you're all set. This feature will start the truck 12
times, then disarm. If you want to turn this feature off, you need to start
the truck and shut it down from the remote (or get into the truck).
If the door to the truck is opened (ie: dome light comes on), the remote
starer disarms itself, so if you forget something in the truck, you'll have
to got through the arming sequence again. When the truck is started, if you
push the brake or release the parking brake before turning the key on, the
truck will shut off.
To start the truck, just poke the start button. It'll power everything up,
same as a regular start, wait for the Wait to Start light to go out, and
then crank the engine over (6, 8, or 12 seconds, your choice at setup), or
until it starts, whichever is first. It'll try to start the truck either 1,
2, or 3 times, which is programmed at install time. And the truck will run
for either 10, 15, or 25 minutes, also programmed at install time, and then
shut itself down. If you want heat, you have to remember to turn on the
heater yourself, and if you have a high idler, you'll need to crank it on as
well.
You can get a module to bypass the factory security. What else can I say
about it? The buttons on the remote have a bit of a delay to prevent the
buttons from being accidentally pressed. I think thats about it. Let me
know if you have any more questions...
Rod"
The quotes enclose his whole message... . seems that I remembered more about what he said than I thought I did

When he's saying positive ground in the above message I'm pretty sure he means that it's switched ground as opposed to switched power...
Rod's out of Saskatchewan so he should know something about the cold

- I dunno if he's a reseller for Autostart or not-he is a distributor for Edge stuff up there as well as some other stuff-maybe Isspro? Good guy-my BOMBs have come through him... .
Any other questions lemme know and I'll drop him a line-or put you in touch with him.
Jason