the original regulator? that should be gone with an alternator - the alternator is either internally regulated or uses a different [more 'modern' 60's-70's] external regulator like this, 4 terminals instead of 3 - the alternator output [large B terminal] needs to go to the ammeter and on to the battery, the new wiring harness may have included a separate alternator harness piece

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics