Pic of some parts.
Power supply 120VAC in and 12VDC out @ 1050mA.
50 1-watt 6500K to 7300K LED's online auction supplied.
Actual Kelvin temp depends on bin lot from actual manufacturer.
These parts were most likely made in china but shipped from US seller.
Channel from local home improvement store, 9/16" x 7/8" x 9/16"
Every LED was approximately 2.5" on center providing 9.5sq." surface area per LED.
LED's soldered onto 20mm star heat sinks.
Heatsinks were also purchased from online auction.
Thermal compound from local radio dealer is a must.
Aluminum to aluminum contact will not transfer heat correctly without thermal paste.
Self adhesive pads or silicone or hot glue will not transfer heat correctly.
Smallest screws I could find @ home improvement store.
Predrilled to facilitate sheet metal screws.
Slightly larger holes for wires to pass through.
We certainly wouldn't want to show the wires.
Extra hole to screw to perfecto hood.
If 4-40 screws were available I would have drilled and tapped mounting holes.
Wires ran through channel soldered to front of LED.
Existing pushbutton or rotary switch made use of.
All LED's had to be soldered to 20mm heatsink.
For best results pre-tin all solder points.
Power supply stuck to side of hood with huge glob of hot glue.
Screws were then used through aluminum to perfecto hood standoffs.
I am new here, thanks for the interest in this retro project.
I feel that asking questions means a warm welcome.
Almost forgot pricing!
C channel $10.79
50 1 watt LED's $12.99
20mm star heat sink $8.99 for 100
4 Power supplies $1.89
Thermal paste was $6, I didn't count since it will make many projects.
Just a dab for any LED and that will be plenty.
4 fixtures were retrofitted, about $8 to do 1 fixture.