Daytime Running lights issue

cinderblocked

I've realized there is only one fuse for the DRL, which must not be blown since the drivers side is functioning correctly. How would I check the polarity? What I thought would be a simple install has exploded into a much larger project

SouthArk370Z

A voltmeter/VOM/multimeter will do the job - you should be able to find one for $15-25 at most auto parts stores, hardware stores, Radio Shack, Walmart, &c.

Put the voltmeter on the power wires going to the working light, taking notice of which meter leads is connected to which wire. With lights turned on check if measurement is + or -. Now move to the non-functioning light, connect meter leads to matching wires. If polarity is not the same, swap wires where they are spliced to wiring harness.

If this were a much older car, without all the computers and other electronics, your could just swap the wires and see if the light started working. Not a good idea with modern cars.

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