How's it going? I have what seems to be a similar problem with DHPT99 with my spark. I'm getting nothing coming out of the coil. It's a new coil. What happened was I went to Autozone for a new belt. When I got home I turned off the Bronco and went into the house to get my tools to do the belt. I decided to move the Bronco to a better spot and when I got in it would crank but it wouldn't fire up. I could hear the fuel pumps working so it wasn't that and I could smell fuel too. So I pulled the wire from the coil to the distributer and checked it for spark. Nothing. So I went back to Autozone and bought a new coil and a test light. I put in the new coil and I still wasn't getting any spark. I checked in the Haynes book and put the test light from the tach side of the coil to the positive side of the battery and had a rapid flashing light while cranking. According to the Haynes book that meant the secondary circuit in the coil is bad. So I took the new coil back to Autozone and they tested it and said the secondary circuit was bad and they didn't have any more in stock. This was a cheap'o' coil by the way. It was only $18. So I got a refund and went over to NAPA. I bought a better quality coil for $55. I put that on I still didn't have any spark. By this time I had to go to work. I work nights. The other thing I was thinking is that the steel block that the mounting screws go through maybe serves as a ground? The mounting plate for it bolts right to the engine. I haven't gotten a chance to sand and clean up the mounting plate yet but does it sound like that could be the problem?