[rpickle]

Hi. I have only owned this truck for 3-4 months now. Tried to use the trailer the other day and no lights. Checked the plug on the hitch. No power. Checked for fuses blown. Found 2. Still no lights. Got to reading different posts. Seems that I need 3 blue relays under the dash. I only have 2. The bottom socket is empty. What are those 3 relays for? I thought I read somewhere also that there are 2 hidden fuses in that same area? Couldn't find them. I need a factory schematic.

 

[tstoutlv]

Just went through this same issue.. The one you're missing under the dash is for the running lights. The rest of the relays required belong under the hood in the fuse box. I got my towing relay kit from uhaul. They had it in stock, but it only comes with 3 total relays and I got the 4th one for under the dash at autozone. The running light relay is the same as the left/right blinker relay.

 

[rpickle]

Thanks. I have a brown and 2 blue under the hood near the battery. I will check Autozone.

 

[tstoutlv]

Thanks. I have a brown and 2 blue under the hood near the battery. I will check Autozone.

The one you're looking for is the blue one. I got it plugged in without removing any of the dash components. Sorry I don't have a part number for you.