I noticed on my '79 F-350 that the wire that leads from the ignition condenser to the coil has broke loose. I have been trying to find this exact same one, but cannot seem to come up with it. This condenser is a small silver cylinder mounted next to the coil, and the only condensers I have been able to find go into the distributor for points. Since the truck is electronic ignition, is this thing really needed? In the research I have done on-line, it looks like this is only used as a noise filter, and if I am not getting any noise through the radio, I could just delete it. Any opinions? Thanks.
If you're not getting any RPM-dependent noise on your radio, then don't worry about it. Modern radios usually have enough bypass capacitance to reject ignition interference; factory radios are hit or miss.
Just make sure that the wire that went to the condenser isn't hanging loose; this circuit is not fused.