PCB routing

Bigboytoys

6,169 posts · Joined 2007

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#2 · Feb 11, 2012

Ah very nice, that'll help someone out.

That should go in the FAQ's, mod's.

 

countryboy90 Discussion starter

747 posts · Joined 2009

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#4 · Feb 11, 2012

i have a question. could somebody test and see if pin C & I are powers or grounds? i would think that they would be ground, but not sure. i would check, but my truck is in pieces and has no wiring hooked up on the outside of the cab. if someone could check that it would add to this threads info i think.

 

Joeairforce

7,460 posts · Joined 2007

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#5 · Feb 12, 2012 (Edited)

I = Ground
C = +12V

The pins are actually numbered on the truck side plug 1-18 (Had to trace all this out since my new cluster was pinned different):

A -18 - Fuel Gauge ------------------------- J - 1 - High Beam
B- 17 - Brake Light ------------------------- K - 2 - Illumination
C - 16 - +12V -------------------------------- L - 3 - Volt Gauge
D - 15 - Low Coolant (Empty) ------------ M - 4 - Volt Gauge
E - 14 - 4WD (Empty) ---------------------- N - 5 - Oil Pres Gauge
F - 13 Seat Belt ----------------------------- O - 6 - +12V
G - 12 Right Turn ---------------------------- P - 7 - Empty
H - 11 - Left Turn ---------------------------- Q - 8 - Empty
I - 10 - Ground ------------------------------ R - 9 - Temp Gauge

 

Trios

1,593 posts · Joined 2009

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#6 · Feb 12, 2012

countryboy90 said:

i went thru the PCB (printed curcuit board) with my eyes and a ohm meter and labeled all the "pinouts" for the PCB. WARNING: this is a 1985 K10 diesel with a clock (well it did have a clock till i put a tach there)

i did find that becuase there was a clock that a couple of the curcuits lead to nothing in the clock area. I labeled what gauges were where. Were you see the word "back" means backlighting for the cluster.

noticed the backlight between the fuel and speedo i forgot to label the top of the bulb, it should be a "K" like the other backlights

Click to expand...

Not bad, but you should have saved it as a .png and not a .jpg so the text didn't get washed out like it did. Also, its a bit small - hard to read on a big monitor like mine.

I believe you have your right and left turn signals backwards, since we're looking at the cluster from behind in this pic.

 

countryboy90 Discussion starter

747 posts · Joined 2009

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#8 · Dec 14, 2012 (Edited by Moderator)

extra info

when I installed the cluster back in the truck, I found out that the low coolant light and 4x4 light are a completely separate harness, so if you would do like I did, you wont need to wire them up to plug into the cluster harness.

btw this is what it looks like with all wires...

​

above the fuel gauge there are 2 bolts. I put those in there for the aftermarket gauges. one bolt is positive and one is ground.

 

turbonator

11,805 posts · Joined 2009

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#9 · Dec 14, 2012

Very good work, your cluster is now PCB break down proof. Hard wiring is the way to go. Are you going to give the surface a spray of sealer (HSS2000) to eliminate corrosion problems ?