The photos show the steps.
Five to ten minutes per light.
LEDs come from IKEA: Inreda, $50 for a 4 pack.
INREDA LED spotlight - IKEA
Almost as bright as original halogens.
Wire strippers and crimping tool required.
Shim (two layers of electrical tape) required for my original "frame".
Or thin two-sided adhesive could be used.
Check your measurements before committing!
Ensure correct polarity before crimping.