[physcobj]

Hey,
I recently installed a g13b twin cam in my Sierra I cut down I loom and had it running to test the loom, I since have installed radiator, cooling system etc. now when going to start I have to spark. With I test light on the coil plug I only get you negative pulse each time I turn the key. I have the check engine light hooked up and get no faults(code 12)

Does anyone have any ideas

Thanks