It's a Sears chrome dialback unit from the early 80's & I recently got careless & let the plug in cord burn on the ex manifold. Sears cannot find me a replacement cord without the timing light model number but there is NO number on it (I looked 3 times). I even opened it up & no number on the inside just some casting numbers on the inside of several of the cheap chrome large housing pieces. It says "Craftsman professional timing analyzer" on the side. EDIT This one