Shop › Injector Adapter 00-05 3100/3400 To 96-99 3100 Injector Adapter 00-05 3100/3400 To 96-99 3100 $50.00 Sold Out Injector adapter for the 00-05 3100/3400 simplified harness to run the 96-99 3100 engine. Get notified by email when this product is in stock. Sold Out Added! Injector adapter for the 00-05 3100/3400 simplified harness to run the 96-99 3100 engine.