Commercial Fleet Electrical Upfitting & Logic Systems

Vehicular Logics, LLC provides engineered vehicle electrical upfitting, custom wire harness manufacturing, and auxiliary power distribution systems for commercial fleets, utility contractors, and specialty body builders. Based in Elkhart County, Indiana — the manufacturing core of North America's specialty vehicle and commercial transport sector — we engineer rugged, work-ready electrical architectures built for continuous commercial duty cycles.

Commercial heavy-duty chassis cab platform ready for fleet electrical upfitting

Chassis Upfit Architecture: Dual-rear-wheel commercial cab chassis platform (Class 3–5) configured with high-output alternators, auxiliary upfitter switch provisions, and frame-rail power feeds ready for vocational body integration.

Our Upfit Capabilities & Electrical Architecture

Factory truck chassis are engineered for baseline consumer driving — they are not wired for high-draw hydraulic pumps, PTO interlocks, continuous auxiliary lighting, or heavy off-grid power demands. Vehicular Logics designs and installs drop-in, professional electrical packages that keep fleet vehicles uniform, dependable, and compliant:

Fleet Vehicle Electrical Upfitting: Turnkey secondary power integration for service bodies, utility trucks, and contractor vans. High-amp auxiliary alternator systems, split-charging relays, and dual-voltage (12V/24V/48V) architectures.
Custom Commercial Wire Harnesses: Built strictly to SAE J1128 specifications utilizing cross-linked high-temperature polyethylene (XLPE) wire, flame-retardant braided looming, and genuine environmental sealed connectors (Deutsch DT, DTM, DTP series).
Solid-State Logic & Switch Panels: Programmable power distribution modules that replace bulky legacy relays with electronic over-current protection, automated low-voltage cut-offs (LVD), and driver switch consoles.
SAE J1939 CAN-Bus Interfacing: Reliable decoding of vehicle telemetry signals (PTO active, park brake engaged, reverse trigger, ignition status) to automate auxiliary lighting and worksite safety interlocks.

Structured multi-conductor commercial vehicle wiring harness with continuous strain-relief cable lacing

Harness Bundling & Strain Relief: Precision spot-tied continuous cable lacing for multi-conductor branch circuits, mitigating vibration fatigue and maintaining conductor grouping across demanding chassis runs.

Commercial Manufacturing & Quality Standards

Every wire harness and power distribution module produced by Vehicular Logics, LLC adheres to strict commercial vehicle engineering standards:

System Parameter	Standard Specification	Industry Compliance
Primary Conductors	Type SXL & GXL Cross-Linked Polyethylene Wire	SAE J1128 / -40°C to +125°C
High-Amp Power Leads	Fine-Strand Tinned Copper Class K (1/0 to 4/0 AWG)	SAE J1127 / ABYC E-11
Connector Systems	Deutsch DT, DTM, DTP & Amphenol AT Series	IP68 / IP69K Sealed
Abrasion Protection	Self-Extinguishing Braided PET & Raychem DR-25	DOT FMVSS 302 Flammability
Circuit Protection	Bussmann / Blue Sea Systems MRBF & Class-T Fuses	SAE J553 / J1171 Marine
Quality Verification	100% Automated Hipot & Pin-to-Pin Continuity Testing	Zero-Fault QC Record on File

Request for Quote (RFQ) & Technical Scope

Fleet operators, dealership upfitters, and commercial body installers can submit project specifications below. Our technical desk reviews circuit pin-outs, duty cycles, and chassis requirements to deliver an itemized quote and manufacturing lead time:

RFQ TRANSMITTED: Thank you for your submission. Your parameters have been received by our engineering desk. A technical specialist will review your chassis specifications and follow up via email. Schematics and wiring prints can also be sent directly to: inquiries@vehicularlogics.org.