Yey!! Successful MOD!!
Re-spliced everything and replaced wires..
Cause of issues before:
- Possible incorrect spliced wires
- lose ground termination of the pic below
(I tried to losen it at one point because I plan to terminate the Resistor there but ended up not using it and at the same time "NOT tightening it")
SPECIAL THANKS to ALEX for his insights and for this DIY guide!!
For those who haven't removed their ugly amber light yet..
The following diagram might help:
along with Alex's guide: