Crimson Racing Wiki

DDU11 Wiring Harness

Subteam: ElectricalSubsystem: Electrical HarnessAssembly: Wire Harness/Connectors AssemblyCars: CR26I, CR26E

Purpose

Connects the Bosch DDU11 display to its sensors and to the CAN network on CR26I and CR26E.

Function

The DDU11 replaced the C185; it is 6.5 in against roughly 5 in, 239 g (0.53 lb) heavier, and three units were given to the team by Bosch Motorsport. Using it on both cars means the IC and EV programs share the same dash, software, interface and information sources.

Design Process

No part-specific design process is documented. The Electrical Harness subsystem design process applies: 1. Collect the sensor list and the datalogger assignment for each sensor. 2. Draw the harness in RapidHarness: main connectors, sensor connectors, connections, then bundles and split points. 3. Order wire early. BMRSWired lead time has run 2 weeks to 3 months and is the single highest-impact long lead item. 4. Cut and crimp terminals, assemble connectors, build service loops. 5. Twist the harness, cover with DR-25 heat shrink, test fit on the frame, then install and recover transition boots and connector boots.

Manufacturing Process

Designed in RapidHarness, then cut, crimped, assembled with service loops, twisted, covered in DR-25 and test fitted on the frame before boots are installed.

Full Material List

M22759 tinned copper wire with Tefzel insulation, Raychem DR-25 heat shrink, Deutsch DTM/DT connectors, RT125 epoxy, Kevlar binder.

Reoccuring issues

None recorded. This part has no entry in Knowledge_Transfer/Issue Logging/Fault Vault.xlsx, in either Issue Log.xlsx, in CR22/Issue Tracking/Shakedown 7-15-23.xlsx, or in any design review issue list found in CrimsonStorage or Box.

Still to document

Nothing in CrimsonStorage covers these yet.