From what you just said, you hooked it up wrong.
Lets start with the right things you did.
3 whites to 3 yellows
Red to red, battery positive.
The blue to switched power.
Every thing else is wrong.
On your 78 You don't send power to the right brush. On the 78 it's grounded,
You don't use the nylon screws. This prevents grounding.
On the rest of the wiring the green from the new reg/rec is ground. The orange from the reg/rec hooks to the green wire to the brushes.
It seems you didn't follow the directions Mike's gave you.
You can try another from Mike's and try following the directions. That's another $99.
On any bike you can't use generic aftermarket parts and keep it original.
Leo
Lets start with the right things you did.
3 whites to 3 yellows
Red to red, battery positive.
The blue to switched power.
Every thing else is wrong.
On your 78 You don't send power to the right brush. On the 78 it's grounded,
You don't use the nylon screws. This prevents grounding.
On the rest of the wiring the green from the new reg/rec is ground. The orange from the reg/rec hooks to the green wire to the brushes.
It seems you didn't follow the directions Mike's gave you.
You can try another from Mike's and try following the directions. That's another $99.
On any bike you can't use generic aftermarket parts and keep it original.
Leo