There are Noid lights for testing Fuel Injector wiring sold individually or as sets in this format w/ different pins on back.

On many setups, just remove a plug @ the injector to plug into the noid.
In "bank" firing like V6 has 3 injectors wired together, all 3 may have to be unplugged to light the bulb enough to see.

⚠️ Warning: Many Noids are same as just a light. But If you have/get one & the pins don't exactly match the injector, often is OK but Do Not force it in the plug or can wallow out the sockets so the injector won't fit wright. More so on 87+ 700 series TBI because very small contacts in the Metripack plug. The Pins should easily go into the plug as don't have locking parts, seals, etc you often push harder to lock into the injector.

Here are a few Examples...
Older Blue Point TBI/EFI Injector Harness Tester Kit, FID8838, is a set of 6, 2 or 3 to fit Fiero


I think the V6 & many other GM Port Injectors are shown above & looks sim to KM J-34730-2B...

Is same PN in Fiero FSM but believe B is in this round format.

Again Can get kits or single units as new parts from other vendors but part numbers may not match.
Text printed on them may not match application either...

Actually plugs into 87+ 700 Series TBI & identical to FID8329

For many users just get the "cheapest" noids as many lost/wreck the small parts before used again.
I only have the BP Kit because got very cheap @ flea market.

Notes:
● In the Fiero FSM is rare that a tool isn't a Kent Moore tool. BT8320 for older Duke TBI, BT8329 for 700 TBI were made by Borroughs T&E, Kalamazoo, MI

● GM/BT&E BTxxxx numbers matches BP FIDxxxx for both TBI Noids.
● Some Kits have Fiber "extension" so can view w/o help. Plug the noid same way then stuff the noid in the "cord" to light the fiber.

Or can get Lisle Universal Noid Light 27800


E2A--> Also make Noids for the IAC sold separate or in kits w/ above... Left = old for old Dukes & V6. Right = new for 87+ 700 TBI


------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

[This message has been edited by theogre (edited 07-11-2024).]