Tachometer install

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K

klavender1

10 Year
Joined
Oct 24, 2013
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3
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19
I have an 86 4x4 22R base truck. I would like to add a stock cluster with a tach. If I found one at pull-a-part or something similar, what parts do I need to grab and what years do I look for?


I apologize in advance because I'm sure it's been covered many time. For the record, I searched. I searched "tachometer" and "instrument gauge install". Found the FAQ for SR5 cluster swap but the link was dead.
 
I want to get some heads together and solve a sr5 cluster swap issue. There is a thread going on yota tech about the swap but it doesn't make any progress. Just keeps lapsing on the same issues. So my questions are how come the LOW FUEL LIGHT doesn't work with my sr5 cluster? Worked great in the old dlx cluster but now doesn't work. I compared the two side by side the dlx doesn't have a bulb for one. Looks like a resistor size thing that heats up and glows. The other is the temp gauge. Did we determine if the senders are different and if so, do they not work with one another? Let's get our own thread going here instead of having to jump around.
Also search comes up with NOTHING.... For all you nay Sayers out there
 
The sr5 cluster as you have found is a direct swap, the low fuel light I believe is determined by the year of the vehicle I have had a couple sr5 clusters that had it and others that didn't. The temp gauge and sender are the same so no worries there, the oil pressure sending unit HAS TO BE CHANGED I stress this because if it's not it will burn up the gauge which is non repairable, you need to get a sending unit for a mechanical gauge.
If it is a v6 cluster then the tach must be recalibrated I have never done it but my understanding is it's not to difficult.


Between here and there
 
Jason, good call on the temp sending units being the same. I wanted to know that for a while now. My sr5 clusters have a bulb spot for a low fuel light. My dlx cluster doesn't have a bulb spot for one but it did have a low fuel light that worked. Kinda weird. But I'm thinking that maybe the spade for the low fuel light is in a different spot on the old harness compared to the new one. Thoughts?
 
I'm not sure in the low fuel light, on my 86 the original gauges didn't have the low fuel light, the 1rst sr5 cluster I put in did have and it worked, I swapped in another sr5 cluster and it doesn't work in this one. I have really dug into it to much to see why some may have it and others don't.


Between here and there
 
Old cluster on top and sr5 on the bottom

image.webp


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The low fuel light on the sr5 cluster is the 2nd one down from the top. The dlx low fuel light looks to be the little blue resistor size thing in the middle
 
ImageUploadedByIH8MUD Forum1398704202.645034.webp
ImageUploadedByIH8MUD Forum1398704215.909160.webp


So after some more investigating I found that there is a low fuel light wire missing on my original harness. I have a pic of my 84 22r harness and a 89 22re harness. On the re one there is a yellow wire, green stripe with red hatching. 3rd slot from the right. Anyone have a wire diagram that shows where this wire goes?


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Some of the fuel level sending units are wired for the light some are not.


Between here and there
 
If your truck is wired for the low fuel light there will be three wires on your fuel gauge sending unit at the tank. Yellow-red to the gauge, white-black to body/system ground and yellow-blue to the low fuel light. What you called a yellow-green wire according to the wiring diagrams for an 86, 89 Truck and 4Runner is actually a yellow-blue.
 
Hadmatt54 said:
If your truck is wired for the low fuel light there will be three wires on your fuel gauge sending unit at the tank. Yellow-red to the gauge, white-black to body/system ground and yellow-blue to the low fuel light. What you called a yellow-green wire according to the wiring diagrams for an 86, 89 Truck and 4Runner is actually a yellow-blue.
Click to expand...

This is what I've always heard. But do all clusters have the light or just the ones with that sending unit?



Between here and there
 
I have several clusters in the garage. I know one is from a 1985, and the others are newer. I can check and see what that socket lights up.
 
I'm pretty sure all SR5 clusters have the low fuel light. Wether or not it has a bulb in the appropriate socket depends totally on the options that were installed in the truck the cluster came out of. It is far easier and cost effective to put the same printed circuit in all clusters that have full instrumentation and leave the sockets empty for those options that don't apply then to make special printed circuits.
 
Hadmatt54 said:
I'm pretty sure all SR5 clusters have the low fuel light.
Click to expand...

Nope. I have three clusters in the garage. One is from a 1985, the other two are newer. While they have the socket for the bulb, they don't have the lettering for the low fuel light. The 1985 had all the same sockets of the later clusters, but was missing lettering the other two have (mostly AT related).
 
Hadmatt -
You say the tech book says it's a yellow blue but my 89 harness is def a yellow green. Hmmm also my non sr5 did have a low fuel light that worked but no bulb for it. Does the book show the wire going all the way from the sending unit to the cluster? If so I wonder if I could just wire it in

KLF my avatar is beast!


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