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  1. Added Prerunner lights now check engine light is on

    Thanks for the advice. I will get an OBD adapter, makes sense to have it.

  2. Added Prerunner lights now check engine light is on

    Update: I started the truck this morning and the check engine light did not come on.

  3. Added Prerunner lights now check engine light is on

    Thanks for the replies. I don’t have a code reader but I will get one and update the thread. I did not see any thing spark when installing the lights, that would have been a red flag. I took the grille off, wired and attached everything on it with a long lead. Then reinstalled the grille and...

  4. Added Prerunner lights now check engine light is on

    I installed 4 Prerunner lights to the grille of my JT. I connected the lights to the 15 amp Aux switch and grounded to body via one of the grounding bolts. Now the check engine light is on but the Prerunner lights work and the truck seems to be fine. I tried grounding to a different location but...




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