For the DC-DC converters you can use the MasterBus Serial Interface
Series 301-106 - Double Stacked Stern Light - 3NM - Vertical Mount -White - Black Housing
Other Functions Interference rejection
Heavy Duty Lugs - 1 Gauge Wire - 3/8" Post - 25-Pack
Just remove the selector switch and connect the existing wires to a 716 cluster
Balmar Alternator 170 AMP 12V 3.15" Dual Foot Saddle J10 Pulley [XT-CR-170-J10] Trailering | Hitches & Accessories For the DC-DC converters youAlternator 170 AMP 12V 3. 15" Dual Foot Saddle J10 Pulley Alternator, XT Series, 170A, 12V, Saddle Mount (Dual Foot), 3. 15in, J10 AltMount Serpentine Pulley, Case Ground Hitachi Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins Sabre Engines Replaces: AT DF 165 12 IG, AT DF 165 J10 This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: