QUOTE=Chris Luongo:
I'm pretty sure it'll work fine for pit-stop mode.
>>> It does. The owner's guide doesn't mention pit-stop, but it does it using the wht/blu activate wire.
What are you using to activate the 551T? A door lock motor wire in the car? An existing aftermarket alarm?
>>> Aftermarket alarm. An old DEI 350, I'll use the RED / wht Aux 2. This is a pick-up. I don't need hatch-pop. Plus Aux 2 requires a 3-second hold the button down. Perfect for R/S activation.
A few issues I could see are:
---Whatever you're going to use to activate the 551T, does it still function when your car engine is running?
>>>This is what has prompted me to use the old 350. I've had this 1991 S-series truck for 18 years. I installed a factory RKE from a 93 S-Blazer when I first got it. I was going to use the hatch-pop I've never needed to activate the 551. But the factory RKE does not activate the hatch with the ignition on. And I want pit-stop. Yes, I could hide a button for the wht/blu wire, and rely on the brake-defeat if a joyrider found it, but I don't think I want to do that.
---Whatever method you currently use to lock the doors in your car, does that work with the engine running? If not, keep in mind that if you make a pit stop, and desire to lock the car, you'd have to lock the doors manually.
>>> I'll test the 350 for this. I've had this all set up on the bench, but I don't remember if the 350 cares if the IGN is on or not for the locks, if it isn't programmed for IGN-contrrolled lock or unlock. I don't think it does.
---A few years back, I had a 1994 Caprice wagon. There was a "trip reset" button on the dash, which made a negative output. If you held the button in for a few seconds, it would reset the trip odometer.
---Anyway, I tied my remote starter's activation input to the wire coming from the switch. When I parked, I could hit the button very quickly, and the remote starter would enter pit-stop mode, but the trip meter would not reset, since I didn't hold the button in too long.
>>> This is neat thinking. I like it a lot. I do a lot of passive-arm ghost switches. I've never thought of using the trip computer buttons. Thanks for the tip.
Depending on what car you have, you might be able to do the same. If your power mirror switch has a center detent that makes the buttons not move either of the mirrors, you could tap into one of the mirror button wires for this.
>>> I'm an old-school guy, the truck is old, the equipment is old, it's all a perfect fit. I will test the 350's lock outputs with the IGN on, but I think that too will be fine. Or I'll lock it manually, which I do now anyway.
I appreciate the comments and input. I learned some stuff.
Thanks.