2004 Chevy Colorado Security Bypass

beegbie wrote: Nope. Same issue as above (it's actually the opposite of what we need). But you may be on to something. What we need here is for the relay on the left to only activate during crank. So if you keep pin 86 to accessory and move pin 85 to ignition, it may work. Assuming the accessory wire rests at enough ground to activate the relay.

So if we are looking for it to pass the resistance signal during crank then this will work. It's a bit crude but will work. I will also add diodes across 85 and 86.

What's RS brand and bypass module is installed?

I also have 05 Crewcab with Bulldog Deluxe and PLJX installed.  No relay. Works great.

Dont Drive and Text, but

Do Text Then Drive

Final diagram below. I think this nails it. Although the colorado and the ION have the same system. I fail to see how this one works on his since the resistance is not being sent during crank.

How about this?

Soldering is fun!

jaxzin wrote: Final diagram below. I think this nails it. Although the colorado and the ION have the same system. I fail to see how this one works on his since the resistance is not being sent during crank.

The diagram that you don't think will work is right. The relay on the left is on all the time except during crank. When the accessory drops out, the resistance is sent through the relay. I wish I had thought of that. Just wire it this way and it will work. Your diagram still does not activate the relay during crank.

technically both will work. On my schematic during crank 86 will drop out on the bottom relay which means 30 and 87a will be connected to ground and that will provide the ground to the resistor relay which will get 12v on 86 during crank. The other schematic is correct also and used less parts. I'll go with that one and give it a try. I'll mock them up first and see how it goes.