Where does this connect to
 

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Where does the right side plug go to, the other side is the tachometer and ignition to the distributor. Here's the problem I'm took out the computer assisted distributor and putting in a HEI distributor and I need the feed off of this wire above, for the ignition 12volts. I Took out the old distributor put in the new one and grabbed this wire to find It had pulled the right side plug out of whatever it was connected to and for the life of me I can't find where the right plug plugs into. It seems that it dropped behind the engine and I can't find it. Where should I be looking for the plug this goes to or if that can't be achieved where do I find a ignition wire that I can use in stead

what are you working on

adding a hei distributor and was looking for ignition voltage line and tach wire that didn't go through the computer. I doubt if anything goes through my computer now. but anyway it's done and running . Thanks for the response.