The test for the ESO is:
Turn off ignition
Disconnect ESO
Turn ignition on
Connect test lamp to Terminal B then to ground.
If it doesn't light, you have a bad fuse or bad connector.
If it does light, then connect Terminal A to the lamp and positive power. If the lamp doesn't light, it's the wiring. If it does light, then the ESO isn't your problem.
-Steve
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1997.5 HMC4 Hummer H1 w/Slantback shell (Mine)
2006 Hummer H3 Adv. Package (Wife's)
M101A2 Trailer
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