Download Got a vehicle in your shop because the odometer is either completely dark or dim on one side? Check if one or both bulbs in the back of the gauge control module are burnt out. This is often the culprit. If one bulb is burnt out, half of the display will be dim. If both bulbs are burnt out, the whole display will be dark. To fix this problem, replace both bulbs with P/N 35505-SCV-A11, H/C 7273683. Since you’ve got the gauge control module out to the dashboard, it makes good sense to replace both bulbs, even if just one is actually burnt out. If this is a warrantable repair, make sure you check for burnt-out bulbs. Don’t just rush off and replace the gauge control module. If the folks at Warranty Parts Inspection (WPI) later determine that a burnt-out bulb(s) was the cause, the failed unit will be returned and your dealership won’t get reimbursed for this repair.