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Old 02-11-2012, 01:35 AM   #1 (permalink)
countryboy90
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PCB routing

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

The missing fuel gauge peg is "C"

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File Type: jpg PCB decoded.jpg (66.9 KB, 86 views)
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86 C10 6.2 Reg. Cab long box, 700r4, 2.73's stock tires and all stock truck. Crank broke. Awaiting 4x4 and 5.3/4l80e swap

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Originally Posted by sathackr View Post
of course if your truck never breaks then you can never have an excuse to be stuck somewhere remote with a girl...so a reliable truck isn't always desireable

Last edited by Joeairforce; 02-12-2012 at 08:39 PM.
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Old 02-11-2012, 02:23 AM   #2 (permalink)
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Ah very nice, that'll help someone out.

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

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Old 02-11-2012, 08:18 AM   #3 (permalink)
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Originally Posted by Bigboytoys View Post
Ah very nice, that'll help someone out.

That should go in the FAQ's, mod's.
x2 Jeff, added
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Old 02-11-2012, 06:14 PM   #4 (permalink)
countryboy90
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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.
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07 GMC Serria SLT. Black, z71 ext sb, leather, xm, onstar

85 K10 6.2 Diesel Reg. Cab long box, HX40 turbo, 700r4, 3.73's. 4" lift on 33's currently awaiting body work...(cab swap in the future due to rust)

86 C10 6.2 Reg. Cab long box, 700r4, 2.73's stock tires and all stock truck. Crank broke. Awaiting 4x4 and 5.3/4l80e swap

2003 Cavalier 2.2L 5 spd 2dr beater till it blows. sole purpose is to keep the cruze out of the salt

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of course if your truck never breaks then you can never have an excuse to be stuck somewhere remote with a girl...so a reliable truck isn't always desireable
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Old 02-11-2012, 11:04 PM   #5 (permalink)
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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
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Last edited by Joeairforce; 02-12-2012 at 08:54 PM.
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Old 02-12-2012, 02:59 AM   #6 (permalink)
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Quote:
Originally Posted by countryboy90 View Post
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
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.
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Trios is right.
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x2 Trios is right lol
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Old 02-12-2012, 02:38 PM   #7 (permalink)
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Originally Posted by Trios View Post
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.
good catch on the turn signals. the text was small to begin with (size 11) so that way i could label stuff without over lap and show each area alittle better.
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85 K10 6.2 Diesel Reg. Cab long box, HX40 turbo, 700r4, 3.73's. 4" lift on 33's currently awaiting body work...(cab swap in the future due to rust)

86 C10 6.2 Reg. Cab long box, 700r4, 2.73's stock tires and all stock truck. Crank broke. Awaiting 4x4 and 5.3/4l80e swap

2003 Cavalier 2.2L 5 spd 2dr beater till it blows. sole purpose is to keep the cruze out of the salt

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Originally Posted by sathackr View Post
of course if your truck never breaks then you can never have an excuse to be stuck somewhere remote with a girl...so a reliable truck isn't always desireable
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Old 12-14-2012, 06:18 AM   #8 (permalink)
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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.
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2014 Chevy Cruze 2lt RS, Black 1.4L turbo/6 speed manual, blacked out, lowered

07 GMC Serria SLT. Black, z71 ext sb, leather, xm, onstar

85 K10 6.2 Diesel Reg. Cab long box, HX40 turbo, 700r4, 3.73's. 4" lift on 33's currently awaiting body work...(cab swap in the future due to rust)

86 C10 6.2 Reg. Cab long box, 700r4, 2.73's stock tires and all stock truck. Crank broke. Awaiting 4x4 and 5.3/4l80e swap

2003 Cavalier 2.2L 5 spd 2dr beater till it blows. sole purpose is to keep the cruze out of the salt

Quote:
Originally Posted by sathackr View Post
of course if your truck never breaks then you can never have an excuse to be stuck somewhere remote with a girl...so a reliable truck isn't always desireable

Last edited by Diaric; 12-16-2015 at 12:07 AM.
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Old 12-14-2012, 10:27 AM   #9 (permalink)
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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 ?
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Old 12-14-2012, 07:18 PM   #10 (permalink)
countryboy90
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Originally Posted by turbonator View Post
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 ?
never thought of a sealer. I didn't, but being a interior part and this truck being a summer driver only I don't think im going to have corrosion issues.

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2014 Chevy Cruze 2lt RS, Black 1.4L turbo/6 speed manual, blacked out, lowered

07 GMC Serria SLT. Black, z71 ext sb, leather, xm, onstar

85 K10 6.2 Diesel Reg. Cab long box, HX40 turbo, 700r4, 3.73's. 4" lift on 33's currently awaiting body work...(cab swap in the future due to rust)

86 C10 6.2 Reg. Cab long box, 700r4, 2.73's stock tires and all stock truck. Crank broke. Awaiting 4x4 and 5.3/4l80e swap

2003 Cavalier 2.2L 5 spd 2dr beater till it blows. sole purpose is to keep the cruze out of the salt

Quote:
Originally Posted by sathackr View Post
of course if your truck never breaks then you can never have an excuse to be stuck somewhere remote with a girl...so a reliable truck isn't always desireable
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