Anyone ID this connector?

There are two white open connectors behind driver side kickplate(in middle of pic and the other halfway to top of pic):

The connector in the middle of the picture above, last night I was using a test light and accidentally touched the left and middle tabs inside that connector. A spark happened. Today the truck won't start.

There is also a plugged grey connector under the hood on the driver side near the master brake and I'm curious what this is:


And a last one by battery near driver headlight.


Thank you for any assistance/education.

 

I’m pretty sure the one by the battery is for the DRLs, if you unplug it you disable the DRLs

 

If you saw a spark and now your vehicle wont start I would start with fuses. You will need to test the fuses with a meter on resistance or continuity. A fuse can sometimes look good at a glance but still be blown. Also check relays.

Yes, the connector next to the battery is the daytime running lights resistor.

To identify those harnesses you will have to check your vehicles wiring diagram.
https://www.tundras.com/threads/ultimate-tundra-wiring-diagrams-collection.81448/

 

Thank you for the info about DRL. That's good to hear and it's a bonus to have those disabled when I hook up the trailer wiring.

As to the no-start after short circuit issue:
Tested all fuses on both sides of each fuse, in truck and under hood, good.
Relay good. Everything good.
Started checking top down everything with multimeter, happened to check battery.
10-11 volts. ? Did that short circuit really drain the battery?
Jump started the truck and it started. Sure enough, battery got drained.
Thank you all for your help.

Still curious about those connectors in the pictures up top.

 

Regardless of what problem one may be having with our 1st Gens, especially electrical, when asking for assistance, knowing the Year, CAB type (AC,DC,RC), Engine (V6 or 8), is very beneficial.

As for connectors and without knowing above info, I’ll take a WAG and say the top connector, is the optional connector installed in most harnesses that one uses for adding a brake controller.

If you can take a pic of the backside showing pin colors and also a better frontal view, it would help.

As others mentioned, the one in eng bay is indeed most likely related to DRL’s

 

Lucky! Was worried you'd fried something.

 

I'm in the process of wiring up fully for a trailer right now and from what I read, the harness for plug and play wasn't available on these until 2003.
My truck is a 2001 AC 4.7 2wd. I'll put it in my sig for future, thanks for pointing it out.

Thanks, Jason. It was a "whew" from me on that as well.

 

Definitely helps. As for connectors if still interested, as mentioned above, better pic of front and back of connectors showing color and how many pins would be helpful.

 

My 2000 had the towing package and came with a four pin connector.

 

If that misstep drained the battery so that the truck wouldn't start, I would be looking for a battery replacement as well.

 

Yes, please. I would love to solve the mystery and know what these are for.

Connector #1, we'll call it "sparky", is the one in the middle of the first pic in original post. It has 3 pins. Wires in back are 1-green/white, 2-black/white with grey rings, and 3-green/white.
Front:

Back:



Connector #2 is the smaller, uppermost one in the first pic in original post. It has 2 pins. Wires are 1-purple and 2-white(might have stripe, hard to see).
Front(upper connector):

Back:


Connector #3 is under the hood near master brake. I suspect it's tied to the little 2-pin connector inside. Wires are purple and white with stripe, similar to #2 inside.
Back of that one here:



This truck did not come with tow package and there is no 4 pin connector. I'll be doing everything myself.

I was thinking about the short on that connector and would never imagine it could cause battery drain, but it may have? Or a combination of that and my son and I working on the truck for a while with door open and door light on. Either way, from short or doors or both combined the battery shouldn't drain like that. 5 years old from who knows where so new battery time.

 

To keep it to 1 thread, I'll comment here about above quote from other thread.

May have overlooked but don't see O 3 being mentioned in other thread but someone did mention in their opinion one by battery was related to DRL. I don't agree but it would help if someone with a 2001 could comment about the plugged connector by booster.

"Sparky" is what they call a "Short Pin" S8 and is used if one has or wants drvr pwr seat.



Will have to look further for Connector's 2 & 3 later this evening

 

Bubba, how are you so good at finding those pics? I poured through that pdf wire manual and never saw that page. Maybe it's from a different source?
Whatever the case, very impressive. Thank you very much for the education, much appreciated.

Also thanks for keeping it to this thread, looks like the other one is going to evolve to become a guide for wiring up towing for a truck that didn't come with it.

 

All info shared is from 2001 EWD but was not from 1 page. It was from 3 different pages and copied/pasted what I felt was relevant.

 

That connector ended up not being the one I was after, go figure. But I'll likely disconnect the day lights anyway because no need.


After I pulled the battery I found the correct connector under the battery pan.

This is a picture of what someone might see when going for that connector and they may assume this is the one they want:

The actual option connector is the smaller dirty one in this picture after battery is moved out of the way:


One way to sanity check yourself when looking for these is to expect a cap on the connector that dead ends. If it's plugged into something else, it's probably not what you're after. Both this connector and the one at the rear are capped.

 

Connector # 2….hard to tell from that frontal pic. Is it a 4 pin connector and they are only using 2 slots ?

 

Connector #2(little on in kick panel) has 2 pins and 2 wires. This is the one I suspect may be tied to the 2 wire connector under the hood that's dead ended. They both use a purple wire and their second wire is white/black. I think it's white/black, might be white/brown. My eyes are not as good as they used to be.

 

White w/blk stripe is quite often ground in these trucks. But not to be confused with white w/grn stripe.