84 uses different wire plan...
The alt goes thru C500 and can melt when the contacts are crap.
Fix C500 but avoid 1 red wire that goes to the alt on C500-E4. reroute that to the battery similar to later years.
also See my Cave, Alternator Sense
(Edit> I updated 1 image to show c500 pins in 84)
Ingition coil get power from C500...
Fix that and See my Cave, Fuse Links notes
[This message has been edited by theogre (edited 08-22-2013).]