Underbody lights


Asked by May 17, 2014 at 12:59 AM about the 2004 Volkswagen Jetta GLS 1.8T

Question type: Car Customization

Does anyone know how I can power
my underbody lights and have them
on for a while if I were to go into a
restaurant and eat and not worry
about my car not starting. I have a
spare car battery that I can place in
the trunk but how can I rig it to where
that battery won't die? Any
suggestions will help!

2 Answers


hook the new relay up to your headlight switch-

Scott Goodyear

jamnblues is a right answer or you add a switch just for the underbody lights. if you wanted to run your spare battery you would need to run a charging wire from your alternator to you spare in the trunk.

Your Answer

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