Hi Anthony,
How did you like Ritop? I've run into a few people who have gone there, as I don't live far away---in Malden. Are you from this area?
Anyway....
I do a lot of dealer work, so I've worked on my fair share of Ridgelines.
---I have never seen/installed the HONDA-SL2 in your pictures, but, from reading the diagram......it serves ONLY to bypass the anti-theft transponder key.
You still need to perform the rest of the remote start installation--ignition, starter, accessory, locks, and so forth.
What is the cost of that part? Can you give up one of your spare keys? It would be far easier just to put a spare key into a universal bypass box, like the DEI 556U, Audiovox AS-TCBM, or bypasskit.com TBKIII........ you lose one of your keys, but the bypass box is cheap, and the labor is easy.
That HONDA-SL2 requires a fair bit of extra labor, and also introduces another opportunity to make mistakes and/or damage the car.
At any rate, compare the cost of the HONDA-SL to the cost of a 556U and a spare key from the Honda dealer, and make your decision from there.
--Locks and stuff: Factory arm/disarm wires are ONLY available inside the driver's door. Hoodpin wire is available ONLY under the hood. The lock/unlock wires are available inside the car, but they unlock ALL the doors at once.
If you buy something such as the HODL2 from bypasskit.com, you can easily make all of these connections, directly from the HODL2 to your remote starter, right on your workbench........it does save you quite a bit of labor.
On top of that, it allows you to retain factory features like unlocking only the driver's door first, and having the domelight come on when you unlock the doors.
On the other hand, if you
really don't have a factory alarm that needs disarming (but I think you do), and you don't care about hoodpin safety or driver's-priority unlocking (I don't like it), then the HODL2 isn't going to save you much time anyway.
Again, compare the cost of the part, to what you think your time/labor is worth. I have some sneaky shortcuts to quickly fish a wire into the driver's door of a Ridgeline.......but to do it the right way, so it looks completely factory, is an unpleasant and time-consuming task.
--If you want to control your windows up and down from the aftermarket alarm, that is easy, and doesn't require any special extra parts.
Go to the carsound.com Security Forum, and do a search for "nissan windows." I've developed a method that requires only one auxilary output from your remote starter, and one cheap relay. The article is about Nissans and Infinitis, but it'll work on your Ridgeline too.
The only downside is that you will NEED to run two wires into the door, regardless of whether or not you buy the HODL2.
P.S. HOW TO TEST FOR FACTORY ALARM ON HONDAS:
1. Be sure hood, cargo storage thingy in the back, tailgate, and all doors are closed. OPEN at least one of the windows.
2. Lock the doors using the factory remote, or using the key, or open one door, hit "power lock," then close.
3. Look at the dashboard. Somewhere, there should be a red light flashing quickly. If it's not on the dashboard, it's installed on the top of the driver's door panel. After a short time, the light will beging to flash slowly.
4. Without using your key or remote.....reach inside the open window and unlock and open the door (just as thief might do after he'd broken the window)........if there is a factory alarm, it should trigger now.