abs and brake light on 06 duramax

I have an omega 340edp+ and an OL-MDB-ALL in an 06 chevy 2500 duramax/allison. Randomly when you remote start the truck, the ABS and brake lights stay on and will stay on for about a minute after you start driving. Doesn't happen with the key, only on R/S and only about 1/3 of the time. I have second ignition hooked up and have double checked all my ignition/accessory wires, they get power and accessories drop power when supposed to. I've also hooked up second accy (brown) off a relay as well. I've even tried hooking up my pink white to the brown and programming that for accy and using the relay off my neg ignition to power the sec ign on the truck. I was thinking that possibly the relay for sec accy being triggered by the orange wire had something to do with it, but no avail. I called tech and they had no fix for me. Any ideas? I'm thinking that the ignition timing isn't playing nice with the truck somewhere and that's my issue. I'm probably going to swap for an Arctic Start and see if that fixes it, but would rather fix what's in there now and pinpoint the exact issue so I know in the future. I should also add that I've done literally hundreds upon hundreds of these trucks and only the d-max trucks with the ally trans seem to give me the trouble and only one in a blue moon at that. I'm wondering if it has to do with the additional computer the truck has for the allison transmission.

GM trucks are especially sensitive to the ignition switch timing. It must see Key sense, then acc, then ign, then acc drop out followed by starter and acc return. VERY time sensitive. Audiovox units perform exactly the way the truck expects. Not sure how you would accomplish this with another unit.  Hopefully someone has ideas on how to use what you already have there. Good luck.To master and control electricity is perfection. *evil laugh*

If your getting to much delay through the unit when powering the second acc. you can try is to swap the acc. outputs to see if reversing the timining delay thru the unit fixes the problem. Another thing you can try using the first acc. to turn on the second acc. using a external relay.