My Greddy turbo timer now goes into countdown mode when I shift into reverse. I use the Greddy wiring harness and had no problems till my alarm got installed. After shifting into reverse my timer countsdown till it hits zero then it just resets itself and functions normally. When I finally turn my car off , it works fine. It just annoying that it goes into countdown when it shouldn't. Any installers out there know how is this possible? The alarm guys must have tied into my wiring harness somehow and created this problem..sigh.

Kelvin

 

Hey make sure you have a GOOD ground. Mine would do the same thing and when i rolled down then windows. If they did tie into the ignition then the ground would have to be good enough for both.....if that makes sense! regardless i found a better ground and now it works fine.

 

Thanks, I'll check that out!

Kelvin