1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 245Get this manual
FUEL SYSTEM-FUEL-INJECTED MODELS Diagnostic harness-You can use the special diagnostic harness and digital voltohmmeter, such as Fluke Model 73, to check operation of some componentsNOTE Use diagnostic harness part No0644181 to test systems on 1996 and earlier modelsUse harness part No0644-266 to test systems on 1997 and 1998 models