* Set contains：
#1：GM PFI
#2：FORD TBI
#3：GM TBI
#4：BOSCH PFI
#5：GEO TBI
#6：GM SCPI
#11：BOSCH 2
#12：GM MULTEC2

* Set also contains：
· Straight- IAC Signal Tester for use on 1987 to current GM No. 700 TBI and PFI Fuel injection Systems with flat 4-pin connectors.
· 90°- IAC Signal Tester for use on 1982 to current GM TBI and PFI Fuel injection System with square 4-pin connectors.

Instructions for noid lites
Disconnect electrical harness from injector. Plug NOID LITE into harness Turn engine ON.
A. If noid lite flashes, electrical system is OK, the problem is in injector or fuel system.
B. If no light steady light indicates electrical malfunation. Check the diagngnostic charts.