Atlas HO SDP35 GYRALITE / MARS Light Modification (DCC)
This sequence of photos outlines adding operating Gyralites to a QSI OEM sound equipped SDP35 or SD35 locomotive. Required Materials: TCS FL-4 function decoder; Ngineering micro Yellow-white LED 2-pack part number N1015-2; Tamiya Clear Red paint, part number X-27; Ngineering #38 Magnet Wire, part number N5038 or similar small gauge wire; Microscale Micro Kristal Kleer adhesive or Cool Chem Cyanopoxy system or similar clear drying adhesive; OPTIONAL: Miniatronics 2-pin micro mini connector, part number 50-001.
Separate number board into 3 parts
Separate the lenses from the middle section.
Attach LEDs to lenses with Micro Kristal Klear or Cyanopoxy.
Paint one lens red with Tamiya Clear Red acrylic paint.
Install LEDs and number board halves in cab.
Note: Install red lens in BOTTOM position.
Attach current limiting resistors and FL-4 decoder.
Splice decoder power leads into front truck harness.
Seaboard Air Line Hood Unit with dual Gyralite (clear and red)