13 tundra +12v ignition wire source

Going to be installing a Viper 4204V Remote start to my 2013 Toyota Tundra. I am going to use an Idatalink ads-al-ca for immobilizer and integration. As you probably know, This is one of those vehicles with small gague ignition wires. The Idatalink install sheet specifies the +12v wires at ignition harness for +12v source. I've seen on DirecTechs sheets they indicate splicing the 1pin 150a +12v plug at fuse box. A couple questions: a)Is the Idatalink install sheet incorrect? b) Since the 1pin wire is such a large wire, how do you splice into it? I usually cut back a small piece of insulation, poke a hole through the wire, then put the new wire thru the hole, twist it around the wire, and then solder & heat shrink. I have a 75watt and 140 / 100 watt soldering gun but don't think it'll generate enough heat to really solder that 4ga (or whatever it is,) wire. I am tempted to run a wire to the battery to avoid splicing into that large wire... Wanted to get some input from someone who has been there and done that... Thanks for all the great info here!

The ignition wires on this vehicle are not small gauge and the 12 volt wire is not found in the fuse box . Are you looking at the right tech wiring for this vehicle? You have two 12v wires at the ignition switch one is WHITE/ Red rated @ 25 amps and the other or is WHITE/ Blue rated @ 40 amps . One or both wires will be sufficient for your install that is for the CA module and Remote Starter , good luck and please verify all your wires with a DMM before connecting.triniforever

I need to apologies I believe I have given you the wrong colors for 12v it's actually black at the fuse box and rated @ 140 or 150 ampstriniforever

Thanks for the reply- the question I have is this- if you were going to connect into that 140/150 amp wire, how would you go about it? Would you use a soldering torch, 240 watt soldering gun, or some other method?

If you cut a small piece of insulation of off the thick 12v wire in the car and like you said poke a hole through it then pass the power wire from the remote start through it and twist it tightly around the wire then use a tool like a crimper and gently squeeze it to make it tight and then wrap electrical tape tightly around it then that should be enough but be careful not to ground anything off while doing this.triniforever

On the larger ignition wires, I typically do not solder for that reason. The wires have plenty of bite that the connection will not be coming apart. Being under the dash, there is a minimal chance of corrosion on the joint either. So I usually leave the larger ignition wires unsoldered. Definitely solder any small wires (including small ignition wires).Kenny

Owner / Technician

KKD Garage LLC

Albany, NY 12205