you can create an over/under figure 8 track

This is Rix 5410103 HO Scale Piping & Mechanical Contractors Building Kit

and run the flasher directly off the tracks

Model Number: 069

Kadee 906 G Scale Magne-Matic New Generation "Phototype" Head Straight Coupler DwDetails-0.88-0.53-12.00-6.00-4.30-2 you can create an over/underThis is a Kadee 906 G Scale Magne Matic New Generation "Phototype" Head Straight Coupler. Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Kadee Model Number: 906 Category 1: Parts Category 2: G Scale Parts The Trainz SKU for this item is P12107650. Trainz Product Id: 12107650