Ive had my 91 runner for about a month now and just noticed these wires that were tucked up under the grill. The tips show some oxidation(burning?)maybe. I pulled them out so they would be more visible.The truck was bought new in Germany then shipped over. Any ideas?

 

fog lights or battery charger?

 

Do you have a block warmer?

 

Im not sure?

As for aux lights or charger I dont see any switch in the cab for lights.

 

same wires on my 91 4runner from mid west thinking block heater.

 

Thanks for the replies. I dont have much use for this in Texas, should I just tape the ends and tuck it back up under there? Is there any reason I would want to remove it completely?

 

You'll be fine leaving it. Usually there is a heating element that is put in place of one of the freeze plugs on the block. Keeps the coolant and oil at a warmer temp so that the vehicle can start. More common on diesels than gas engines. It won't hurt anything to leave it there.

 

Have you tried following the wiring to see where it goes? Not sure how your block heaters are setup but they usually have an actual male plug. See if it traces to the block.

 

I followed it into another bundle of wires that was covered by a protective plastic making it difficult to discern the origin. I was worried because the tips of the wires looked burnt/really corroded and diddnt want some hot wires flopping around near my engine. I'lll try to post some more pics.

 

OK well if the wires did not connect to a cord which then went to your engine block then I am skeptical on it being a block heater based on all the block heaters I have seen. I cant tell by the images but are the ends of the wires a connection (male or female?) or are they just exposed wire with tape over it?

 

Since its in the general area, are your horns hooked up?

 

Yes

The wires are not taped, they have a sorta factory lookin sleeve around them

 

Foglights?

 

wire colors?

 

I have the EXACT same wires hanging out the front of my 4Runner.

They look too "light duty" to be for a block heater IMO. No signs of missing fog lights, plus theres only one set. I would imagine if this wire were for fog lights there would be a pair.

I traced them back as well and they disappear into a bundle of wire and I lose them. They appear to me to be factory.

Any ideas?

 

I have the same thing on my 4runner. I believe it's plugged into something though. WOn't be able to check until tomorrow. Anything to do w/ a trans cooler?

 

unless the fog lights were a dealer-installed option and had their own harness. that way you can leave those wires on trucks without fog lights without having them flapping around back there.

 

I tried to have the dealer look at it but they are "too busy"

 

Truck is now at dealer should have answer by the end of the day, maybe

 

UPDATE: Just got a call from the dealer. They think That the wires were supposed to go to some sort of resistor for the fan. They didnt have the parts to "fix" the problem and would have to order it.Quoted me $175 to "fix".