Where's the Ground Wire??
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Joined: Oct 2009
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Where's the Ground Wire??
I have a 1990 L98 convertible. The "Infl Rest" and "Seatbelt" lights stay on all the time. I've cleaned all the ground wires behind the battery and coated them with dyelectric grease, yet they still stay on. The ground wire(s) must ground somewhere else? I can't spot any more grounds without dismantling half the engine. Anybody know where the grounds are for these lights? Thanks...
Thread Starter
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Joined: Oct 2009
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I think I know what I did wrong!!
By doing more research, I think I know where I screwed up. I cleaned up a bunch of ground wires on the post behind the battery, but I didn't clean the necessary one -- that's the one with the black box on it (#$^&@!!!!!). Tomorrow, I'm gonna takerapart agin and try to do it right next time. Thanks anyway.
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Joined: Jul 2009
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From: Shepherdstown WV
I have a 1990 L98 convertible. The "Infl Rest" and "Seatbelt" lights stay on all the time. I've cleaned all the ground wires behind the battery and coated them with dyelectric grease, yet they still stay on. The ground wire(s) must ground somewhere else? I can't spot any more grounds without dismantling half the engine. Anybody know where the grounds are for these lights? Thanks...
Greg
Team Owner
Joined: Dec 1999
Posts: 34,873
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From: Lacey WA RVN 68-69
NCM Sinkhole Donor
The biggest ground issue with the 90 is the two sensors mounted on the frame rails. The right side sensor sits under the A/C box and moisture drips on it causing rust where the sensor is bolted to the frame rail. Remove the passenger side rear wheelwell and you will see a small black box. It's attached by two screws.
Disconnect the battery and wait about 10 minutes before removing the sensor. Clean the rust off the base of the sensor and the top of the frame rail, coat with some dielectric grease and re-install. The driver's side sensor is below the battery tray. Do the same there.
Resetting the SRS light is tricky but you can do a search on SRS light to find the instructions.
Disconnect the battery and wait about 10 minutes before removing the sensor. Clean the rust off the base of the sensor and the top of the frame rail, coat with some dielectric grease and re-install. The driver's side sensor is below the battery tray. Do the same there.
Resetting the SRS light is tricky but you can do a search on SRS light to find the instructions.
