SPARKS89

iTrader: (1)

I want to but this SR5 cluster from a fellow Yotatecher, but neither of us knows what this block and wires on the back are for. Can anybody help?

jerry507

Not to be a serious pain, but I'd have a much much better chance if the picture was less blurry. If you just want to take a closeup of the block and wires that's fine. The rest of the gauge looks stock.

SPARKS89

iTrader: (1)

I know. I can't see it very well either. That picture was emailed to me. I've seen pictures of other clusters but I've never seen that before. I'm just wondering if it's an option available on that particular truck or something. He said it came out of a 95 4Runner. I'll see if I can get him to send me a better picture.

combatcarl

Try reading thru here, somewhere in there, I swear I saw a shot of one of those. Sorry I'm not more help! But I read thru there before my swap, think I saw it then.
https://www.yotatech.com/forums/f116/sr5-gauge-cluster-swap-how-pics-179106/

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dropzone

iTrader: (6)

Flux capacitor interface

jerry507

https://www.yotatech.com/forums/show...&postcount=158

Too bad no one figures out what it is

combatcarl

Ah...plug it in, keep a fire bottle nearby. Just make sure the oil sender is the right one before turning key on.

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jerry507

Yea, I really doubt it does anything bad. Better pictures with more angles would help. Mysteries annoy me to no end though!

dropzone

iTrader: (6)

Do you have a corresponding plug under the dash?
It to me doesn't look like it is even meant to plug in, more of a type of relay or something and the holes might be a form of vent..

SPARKS89

iTrader: (1)

Haha thanks dropzone. I can use my time machine to go back and see what it was put there for.

SPARKS89

iTrader: (1)

There's nothing it would hook up to in my dash. I don't know about his tho. I'm still waiting on more pictures from him.

SPARKS89

iTrader: (1)

I read that same thread earlier today wanting to get more info on the swap and maybe figure out what it is too. No such luck but thanks for your help.

SPARKS89

iTrader: (1)

I read about the oil pressure sender on superbleeder's thread. That's good info. I didn't know I needed to do that.

SPARKS89

iTrader: (1)

I got a better picture sent to me. I've seen this on other rigs so I'm pretty sure it's ok, but I still want to know what it is. Any ideas?

jerry507

Looks like three wires total. I wish I had one here, but I'd guess it's some kind of bolt on fix they had to do for some signal. I'm guessing at the wire colors here but it looks like solid black, orange and black, and yellow and black (maybe yellow/brown?). If so, my best guess is that it's a noise filter removing ignition (black wire for the tach) from whatever the yellow and ??? wire is. Maybe fuel, maybe something else. You see those nice premade cases frequently with noise filters and I know the ignition system already has noise filters on it.

Best guess

combatcarl

Yep, that makes sense. Looking at the guts of the tach, it could be Toyota found it was a little sensitive to "noise", and made a fix. (Never expecting folks to do cluster swaps)

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stock87

Almost looks like it could be some kind of warning buzzer or chime… speed? Overrev? Didn't the diesels have an alarm for water in the fuel or something?

SPARKS89

iTrader: (1)

I've been trying to figure this out and I've come across some people who are asking the same question about theirs. All I've been able to come up with is it seems to be used in rigs that are a later model (mid 90s or so) and have a V6/automatic setup. It's located moreso behind the tach so maybe it's something to do with keeping the tach from bottoming out in the middle of a shift........I don't know. I'm going to keep looking.

combatcarl

Well, mine was from a 91 3.0 auto, and didn't have it. Just to give an idea of what year(s) may not have had it.

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stock87

You know, another thing I just realized looking at the pics… that's not a Truck/4Runner cluster.

Toyota, yeah, but the Trucks/4Runners only have 3 plugs, not 4. At least not the 84-89 years. I haven't seen the later ones, but the shape still looks wrong.