Check engine light. Why?

Can any body tell me why after installing a remot start, the Check engine light might come on??  I have checked everything that I did and there seems to be no problem on my end.

Thanks    T

Drive it like you rented it!!!!!

Here is what I would do.  I would buy a relay and hook it up as follows.

Red Wire  -   Ignition output from brain

Black wire  -  Ground (VERY GOOD GROUND)

Yellow wire  -  12volt constant supply (Ignition harness)

Brown wire  -  Hook up to third ignition wire

Orange wire - Do not use

This is with a Directed relay and recomend you use these since they can handle a lot of current.  Let me know if you have any more q's!

Pin 30 goes to the 3rd igntition wire you need to power up

Pin 87 goes to fused 12v+ power source

Pin 86 goes to an Ignition  wire

Pin 85 goes to a (-)out when running wire from the RS.

you dont need to hook up 3 ign wires you just have to hook uo

PINK_ IGN1

WHITE IGN2

be sure white is hooked up as true ignition not acc

Brown is just an ACC it powers the radio