No crank?Dead batteries? We trace it.
Mobile heavy-duty electrical diagnostics across Indianapolis & central Indiana — ECM codes, wiring, alternators, batteries.
Traced at the truck.
Not by guesswork.
From a dash full of warning lights to a dead truck at 2am, our mobile techs roll with OEM-level scan tools, load testers and harness kits to find the fault and put you back on the road.
ECM / PCM fault codes
Active & inactive code reads, parameter resets and ECM diagnostics on Cummins, Detroit, PACCAR and Volvo platforms.
No-start diagnosis
Crank / no-start, no-crank, intermittent shutdowns — traced from ignition switch to fuel solenoid.
Batteries & charging
Bank load testing, alternator output, voltage regulator and 12V/24V charging system rebuilds on-site.
Parasitic draw
Find the circuit killing your batteries overnight — APUs, inverters, telematics and aftermarket lighting.
Starters & solenoids
Delco, Mitsubishi and Bosch heavy-duty starter replacement, solenoid contacts and cable repairs.
Wiring & harness repair
Burned harnesses, chafed grounds, trailer 7-way and ABS pigtails — repaired to OEM with heat-shrink and loom.
Every ECM
in the fleet. Read & cleared.
Cummins Insite, Detroit DDDL, PACCAR Davie4, Volvo PTT — if it talks J1939, we plug in, pull the codes and walk you through what's actually wrong.
"Truck wouldn't crank at the Flying J on I-70. Marcus showed up, load-tested the bank, found a fried ground strap and a bad #3 battery, swapped them and had me firing within the hour."— Owner operator, Indianapolis IN
Diagnostic techs,
not parts swappers.
Every Road X electrical call goes to a vetted heavy-duty mechanic with OEM scan tools, meters and wiring diagrams — so you pay for a fix, not a guess.
One call.
A real diagnostic tech
rolling to you.
Skip the tow. Skip the parts-cannon shop. Talk to Road X dispatch and a heavy-duty electrical mechanic is on the way.