Problem with trailer lights on 2014 Yaris

[CTScott]

Originally Posted by RWey52

I'm not using switched power nor have I found the connector you listed. Where is it? I'd simply download a schematic, but every damned page wants credit card verification; my first born; or a commitment to purchase a timeshare in Tuvalu.

Currently I'm tapping off the wires on the left tail light assembly, with one wire of the converter traversing over to the right tail light for the right turn signal. It's not rocket science and a similar 5to4 converter worked on my 2008 Yaris, tho the tail light assembly was completely different. Nevertheless, on that vehicle I simply found the lines, tied them to the converter, tied the converter ground to the chassis, and it worked.

I have a 3-door hatchback. I'm assuming that the multiple wht/blk wires going to the various bulbs are all tied together at some point, and thus my decision to use just one of them ( from the brake light bulb ) should work just fine.

I guess my basic questions are this:

1) Are all the wht/blk lines on each bulb common? If so, why don't they ohm out to chassis ground?
2) Will a standard 5 to 4 converter work?


Why does this have to be so difficult? Did I purchase a dead converter ?

The connector that I am listing is the one that plugs into the back of the tail light.

All white/black wires are commoned to chassis ground. What are you using as your chassis reference point when measuring?

If your converter has an ignition switched power wire, than that must be used and fed from something other than the feed to the bulbs. The older style 5-4's did not require ignition switched power, but many of the newer ones do.