1996 gmc jimmy relays and drl's.

1996 GMC JIMMY
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JDM
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I have a 1996 gmc jimmy, 412000 kms 4.3L (I believe) and one of my relays in the glove box ( the one closest to the pass door ) constantly clicks when I turn lights on at night. Just wondering why and what it controls. Also I have no DRL's, just wondering so troubleshooting tips for that. Thanks
Jun 14, 2007 at 5:40 AM
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DANIMALGMC
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Assuming that the vehicle never had DRL's:

Your light switch cannot handle the current that the headlights draw so they route this through a relay to handle the load.

If you have DRL's and they are not functioning:
There is a fuse labeled DRL and that feeds a seperate relay with a small value resistor (DRL's are not at 100% brightness). When you turn on your headlights another relay bypasses the DRL relay to give you 100% birghtness.
Jun 25, 2007 at 9:59 AM