!!!Guide to schematics

Theory of operation described the flow (or intended flow) of the circuits, and some of the reasons for extra relays, etc.

Key to schematics contains the decoder for the schematics and some basic explanations.

Parts list all components used to complete the EV conversion

!!!Primary circuit

High voltage, high current circuit.

[img[images/primary-icon.jpg][http://www.stealthbus.net/pdf/primary-wiring-B.pdf]]

!!!Secondary circuit

Low voltage control and warning systems.

[img[images/secondary-icon.jpg][http://www.stealthbus.net/pdf/secondary-wiring-A.pdf]]

!!!Modification to bus wiring

Changes to the original wiring harness to reuse dash lamps and ignition key

[img[images/buswiring_mods_icon.jpg][images/buswiring_mods.jpg]]

|!Label|!Description|!Physical location|!Schematic location|!Details|

|MC|Main Contactor|Controller panel|Contacts on primary, Coil on secondary|Controls negative rail to controller/Motor|

|RC|Run Contactor|Controller panel|Contacts on primary, Coil on secondary|Controls positive rail to controller|

|KSI|Key Switch Interlock|Controller panel|Contacts on primary, Coil on secondary|Controls pack voltage to enable controller|

|RL|Run Latch|Under dashboard|Secondary|Latches key when turned to “Start”|

|IS|Inertia Switch|Under dashboard|Secondary|Basic kill switch in case of accident|

|RR|Run Relay|Controller panel|Secondary|Latch “Start” from the existing wiring harness for isolation|

|MT|Motor Thermal|Motor|Secondary|Signals by opening contacts that motor is overheating|

|~MTa|Motor Thermal (a)|Controller panel|Secondary|Connects motor overheat to “OIL” dashboard lamp, and replicate “lamp test”|

|~CDa|Charger Detect (a)|Charger detect module|Secondary|Detects and signals by grounding pin that external power is connected|

|~CDb|Charger Detect (b)|Controller panel|Secondary|Invert logic from ~CDa to drive ~CDc correctly|

|~CDc|Charger Detect (c)|Controller panel|Secondary|Connects ~CDb to “GEN” for charger on state, and replicate “lamp test”|

|CI|Charger Interlock|Controller panel|Secondary|Disables RE & KSI if charger connected|

|RE|Run Enable|Controller panel|Secondary|Provide 1A drive for RC coil, since TPS switch rated at 0.2A|

|TPS|Throttle Pedal Switch|Throttle box|Secondary|Provides safety disconnect when throttle released|