xcrs needed for remote start?

Hi,
I have a 2006 Scion tC a/t. I've installed the a Viper 791xv about 2 1/2 years ago and now I want to install the remote start to it. I have the 556uw bypass module and located all the wires I need.

I just went through the box with all the alarm stuff and found the extreme capacity relay satellite. Do I need it for the remote start installation? How would I have to wire it up if I need it?

P.S. Do I need to install the hoodpin switch too?
Thanks in advance,
Roger

Yes you definitely need to install the hood switch.  You do not want some idiot to be playing with your remote and start the car while you or a mechanic is trying to install a belt.  May not be good for fingers.   I have no idea about your relay module.

You can get the install manual in the downloads section.

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Can I just t-tap the wires from the remote start primary harness into the main ignition harness? Or do they need to go through the XCRS?
Thanks

Absolutely you have to use the XCRS, unless you feel like adding an hour or two of pointless labor by hacking into the ribbon cable which would connect to it and wiring up your own relays.

If by "remote start primary harness" you mean the one with the 7 heavy gauge wires in it, the wires connect to the ignition harness on the car and the white connector plugs into the XCRS's large connector.

Also, you should not be using T-Taps for any connections. They are not designed for a durable connection in an automotive environment, and regularly stop working when the car's bounces and vibrations get to them. Scotchloks are marginally acceptable, but soldering or crimping is ideal.

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C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two

Thanks chriswallace187,
I actually meant Scotchloks hehe
I read somewhere that some wires need to be cut. Does that include my installation?
Thanks

Just the first starter wire would need cut if you want to use the Viper's starter kill/anti-grind features. Heavy green wire goes toward the ignition switch, heavy purple wire toward the starter.

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C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two

T-taps and Scotchloks: There are many discussions on this and other forums about which connection method is best. It has already been discussed many times. Everyone has a different opinion.

Hoopin: As others have said, it's an important safety feature that'll keep the remote starter from turning on when the hood is open. It'll also trigger the alarm if a thief opens the hood.

If this is your first install, I'd recommend running the hoodpin wire out under the hood, but get the remote starter working before you mount the switch.

Getting the switch into a good spot is tricky, and takes lots of patience. If you mount the switch first, and then the remote start doesn't work, you'll have no idea why and you'll have to trobuleshoot.

Get the remote start working correctly, then mount the switch, and then if the remote start doesn't work, you'll know that you simply have to move or readjust the switch.

Cutting of wires: Like chriswallace said, you'd only cut the car's starter wire.

The cutting of the starter wire is for two things: Starter kill, for preventing the car from being started when the alarm is armed, and anti-grind, so you can't engage the car's starter again while the remote start is already running.

If starter kill and antigrind aren't important to you, you could just connect the XCRS' starter output directly to the car's starter wire, without cutting it.

All other connections will be just connecting onto the car's existing wires, without cutting them.

XCRS: If you're not familiar with relays, look at the Relays guide on the top left of this site.

The XCRS is nothing but a handful of small relays, packaged into a nice enclosure.

In short, the ribbon cable puts out low-power negative signals, which trigger the relays, and then the relays put out high power positive to power up the car.

If you tried to connect the ribbon cable's low-current, negative-polarity signals directly to the car, it wouldn't work, and there's also a good chance you'd burn out the remote starter.

There are a few more connections you'll need to make:

Brake wire: The small brown wire needs to be connected to the car's brake wire. This will shut down the remote starter when you insert the key, turn it on, and drive the car away.

Tachometer: You could get the car to work without the tach wire, but on your car it's so easy (right in the underdash OBDII diagnostic plug), that it would be best to connect it.

Control switch: In the same plug with the brake and tach wires, is a small BLACK/ white. If this wire doesn't see a ground, the remote starter won't work. It could be connected straight to ground, although you're supposed to run it through the included toggle switch, so you can disable the remote start when desired.

Alrite Thanks for everyone's help!
I'm working on it now, but where is a good spot to a high current power from? Is the fuse panel good? If so, what amp fuse should I use?
Thanks

Or should I just get the power from the ignition harness?

I finished installing the everything, but the remote start wouldn't work. When I try to use the R/S, the parking lights flash, but the car does not start. I checked all the wiring, but couldn't find any problems. Are there anywhere else I should check? Is the XCRS relay supposed to make clicking sounds? Cause mine doesn't and I know other relays make the clicking sound.