72cut Posted January 28 Share Posted January 28 88 mj4.0 Left blinker works. When i try right blinker all blinkers come on as if i turned hazards on. Also, headlights work but won't go off when i push in switch. They won't go off until i disconnect battery. Also tail lights. What is going on? Link to comment Share on other sites More sharing options...
89 MJ Posted January 28 Share Posted January 28 How does the tail light ground look? Do the bulb sockets look alright? Link to comment Share on other sites More sharing options...
72cut Posted January 28 Author Share Posted January 28 Looks ok Link to comment Share on other sites More sharing options...
eaglescout526 Posted January 28 Share Posted January 28 What all have you done? Maybe there’s a goof along your repairs Link to comment Share on other sites More sharing options...
Eagle_SX4 Posted January 28 Share Posted January 28 35 minutes ago, 72cut said: Also, headlights work but won't go off when i push in switch If you have installed a headlight relay harness the relays may be wired incorrectly. If you don't have a relay harness I don't know what would cause this. Link to comment Share on other sites More sharing options...
72cut Posted January 28 Author Share Posted January 28 Havent installed anything. Is relay harness same as switch? Novice question Link to comment Share on other sites More sharing options...
Eagle_SX4 Posted January 28 Share Posted January 28 54 minutes ago, 72cut said: Havent installed anything. Is relay harness same as switch? Novice question No. A relay harness uses the exiting headlight circuit to power 2 or more relays to then connect the headlights straight to the battery. The headlights can draw more current through the switch than it can handle and sometimes causes it to melt or worst case catch fire. Also a relay harness can improve the voltage at the headlights making them brighter than running them through the switch. Link to comment Share on other sites More sharing options...
72cut Posted January 29 Author Share Posted January 29 Ok thanks what should i start with telay harness or switch? Link to comment Share on other sites More sharing options...
pizzaman09 Posted January 29 Share Posted January 29 I would start with cleaning all of the contacts with the bulbs if it previously worked correctly. Then contacts with the switches. Followed by all of Cruiser54's tips for the electrical system. Link to comment Share on other sites More sharing options...
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