varad scanner

O  I did that at first because I never had a diode on the alien scanner just pick up a few to try and get this new one to work and no starter kill do not like them after the one on the code alarm I had years ago stopped working and car would not start. But I have tried scanner only on gwa wire with and with out diode. What would happen if I put a relay on the scanner?

there is no need for a relay but if youd like you can connect 12v to 85,orange wire to 86, ground(-) to 30, and the wire from the scanner on 87.  give me the exact model to look up wiring for that scanner.

o ya the alien scanner is a flat strip that is blue and the raptor is a red ,blue and purple led scanner and it bench tested ok

I  put on a relay the way you said to and it works thanks for all your help!!!!!

remember, if you want to program you have to connect orange wire from scanner to power and press button behind scanner.  After programming just connecct back to the way it was and your done

I believe your supposed to use a switching diode, just fought the same battle as you. Glad to hear the relay method works also.

While the relay works, it'd be better to find a suitable diode to use for this, because a relay draws too much current for it to be used for key off purposes. They should only be used for momentary applications or where the engine is running. If you start the car regularly and don't let it sit for long periods, you'd be okay, but you may as well just leave it permanently on by just connecting the wire to ground.