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#1 |
Registered User
Join Date: Dec 2010
Location: NC
Posts: 666
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Re: 67-72 Electric speedo
How about a close up pic of the back where it wires into the new speedo please. Thank you in advance.
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#2 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Sure thing. There are 7 pins on the back of the circuit board, but you'll only use 3. They are labled on the board, IGN for ignition power, GND for ground, and SPD for the speedometer input to the gauge. In the pic, the pink is ignition, black is ground and green is speedo input. Also, when you take the original printed circuit off the back of the cluster, if you save a few of the square push on connectors that the gauges hook to, you can solder a wire directly on to them and then the wire will just push on and will be a good connection without having to solder straight to the circuit board.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#3 | |
Registered User
Join Date: Dec 2010
Location: NC
Posts: 666
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Re: 67-72 Electric speedo
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#4 | |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Quote:
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#5 |
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Join Date: Jul 2009
Location: Russellville, Arkansas
Posts: 1,699
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Re: 67-72 Electric speedo
Finally got the time and stamps to send the money order. Had to get layed off to do it, but... started right back to work as soon as I got home, so no more time to work on the truck again. But at least I'm home. Thanks again. Jim. Money sent Saturday.
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#6 |
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Join Date: Jul 2009
Location: Russellville, Arkansas
Posts: 1,699
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Re: 67-72 Electric speedo
Thanks Eric, got the kit in the mail last night. Now gotta get some descent weather and a day off at the same time to find me a donor speedo at the yards. Jim
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#7 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Ok guys, here's the long over due 'how-to' write up. This is going to take a while to do since I can't type, and making the parts and photographing the steps then putting it all on here is time consuming. So here's the first installment.
First up is the tools I used to do all this. ![]() This is what you'll start with. ![]() Cut out the template and trace it on to a piece of 22 gauge sheet metal. ![]() Cut it out. ![]() Cut out the middle, I did this with a cut off wheel and a die grinder. ![]() Should look like this. ![]() Cut out the holes and drill the 3 small mounting holes. ![]() Make sure the speedo fits it, you may have to do some trimming for a nice fit. ![]() Back side ![]() Put the template in the back tin and mark what needs to be cut out. ![]() ![]() Cut it out. ![]()
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#8 |
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Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Next we'll move on to the face. I can't stress enough here how important it is to TAKE YOUR TIME, and make sure it's positioned correctly.
Start by pulling the whole S-10 face off the clear plastic part, it comes off easily. ![]() Then cut out the center hole in the speedo decal, I use an X-Acto knife for this. ![]() Center the decal on the S-10 face, on the back side center the small hole in the larger hole. ![]() Then make a mark at the 50mph mark on the S-10 face, and the 60mph on the new decal, and tape it on so it doesn't move. ![]() Make sure it's centered side to side also, and tape the top as shown. ![]() ![]() With it taped in position, carefully flip it up, and peel just the backing off the sticker. Make sure that the S-10 face is CLEAN, any dirt under the sticker will leave bumps in it, you don't want that. ![]() Then starting at the top and working your way down, slowly press it on, working out any bubbles as you go. Don't try to put the whole sticker on at once. ![]() Once it's on, carefully remove the backing, Don't pull straight up as that will lift the sticker, pull back on it's self, flush with the face. Go slow! ![]() Once off it should look like this, notice it's centered in the old numbers on the old face. ![]() Using a BRAND NEW X-Acto knife blade, carefully cut out just the odometer holes, DO NOT cut the center hole out any more. Just the weight of the blade should be enough, any more pressure and you run the risk of cutting into the S-10 face. I didn't have a new blade, so in the pics it isn't done yet, but this gives you an idea. ![]() Then just cut out the speedometer face. ![]() Put it on the clear plastic part and mark where it needs to be cut. ![]() Then cut the clear plastic part, it should look like this when done. ![]() This is all I have at the moment, in the next couple of days I'll be posting more.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html Last edited by ls1nova71; 04-15-2013 at 11:47 PM. |
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#9 |
Registered User
Join Date: Jul 2009
Location: Russellville, Arkansas
Posts: 1,699
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Re: 67-72 Electric speedo
Thanks for the time and effort to show us how its done. Hope to get to mine soon. Jim
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#10 |
Registered User
Join Date: Mar 2011
Location: Orlando, FL
Posts: 1
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Re: 67-72 Electric speedo
So... are there anymore kits available? I just found this thread.
Nice looking Install and great idea! I have a 71 I'm doing a LQ9/4L60E swap into that could really use this mod! -Brent |
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#11 |
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Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,563
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Re: 67-72 Electric speedo
Then cut the clear plastic part, it should look like this when done.
![]() How are you guys cutting this clear plastic out?
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70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
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#12 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
I usually use an air powered cut off wheel then sand the edges with a DA sander, but those tin snips in the background should work.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#13 |
Registered User
Join Date: Aug 2012
Location: Indiana
Posts: 470
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Re: 67-72 Electric speedo
eric looks good so far and I like all the pics they help alot, one question how do you cut the clear plastic face that you showed in the last two pics? i figure tin snips or scissors would probably crack/break it?
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70 C10 working on a LSx swap ![]() 4.8L MS3 edelbrock pro flo intake, pacesetter long tubes, 4l60e 2500 stall hoping the tranny holds up lol |
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#14 | ||
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Quote:
Quote:
I cut it out with a cut off wheel and sanded the edges smooth with a DA sander. You're right, tin snips would probably be hard to use and would likely crack it.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#15 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Getting back to the mounting part, trim the mounting plate so it fits nicely in the back tin.
![]() On the back side, mark where the dash light hole needs to be cut out. ![]() Then cut it out, should look something like this. ![]() I usually tack weld this piece to the back tin, but if you don't have access to one, you can screw it on with some sheet metal screws. It may actually help to screw it first even if you plan on welding it since there will be some trial and error fitting required to get the speedo centered in the opening. Just drill the holes in the back tin a little bigger than the holes in the mounting plate so you can move it around. Also in this pic, you can see where the new hole needs to be drilled for the other speedo light that got removed by the trip reset knob. ![]() ![]() Put the speedo and the clear plastic part on the mounting plate and screw it back on with the 3 original screws. ![]() ![]() With it screwed to the back tin it will look like so. ![]() Then you'll need to just kind of eyeball where the trip reset needs to come through the inner tin. You won't get it right on the first try, but it doesn't matter since it needs to be a little over sized anyway. Once you get the hole drilled, make sure that the reset button isn't rubbing the inner tin at all, it needs to be loose in the hole. Then make sure that the speedo is centered in the hole side to side. ![]() Now would be a good time to put the gas gauge back in and make sure that the center of the speedo is level with the center of the gas gauge. The speedo is NOT centered top to bottom, it's closer to the bottom, but by comparing it to the gas gauge you'll see what I mean. In the right spot. ![]() Now mark around the reset with some tape, making sure that the reset isn't binding or rubbing on the inner tin. ![]() With the hole marked exactly where it needs to be with the tape... ![]() Now put the lens in the bezel and put the tin back in. ![]() Mark the center of the hole on the lens. ![]() Remove the lens and drill the hole. Try to use a drill bit the same size as the reset knob. It will be drilled out bigger later, but for now needs to be small, it's going to help with drilling the hole in the bezel later on. ![]() Once drilled. ![]() Now we'll work on the lens. Start by marking the mph, 0, 50, and 100 marks with a sharpie on the OUTSIDE of the lens. ![]() Then using some non-abrasive, silicone free polishing compound, start rubbing the numbers off the inside of the lens. It takes a little elbow grease, but it's not all that hard. ![]() Continue rubbing all the numbers until the lens is completley clear. Now is a good time to make sure the inside of the lens is nicely polished since you won't want to polish it after you've painted the numbers. ![]() This is all I have for tonight. Stay tuned for the painting of the lens next....
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#16 |
Registered User
Join Date: Mar 2015
Location: Utah
Posts: 750
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Re: 67-72 Electric speedo
The paint for my numbers was so thick that the polishing compound wouldn't work, i wet sanded it with 2000 grit sand paper, then used some medium cut compound to get rid of the scratches.
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#17 | |
17's too small
Join Date: Oct 2004
Location: Las Vegas, NV
Posts: 335
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Re: 67-72 Electric speedo
Put me down for 1. I can prepay, don't care if it takes a month or two.
PM me when ready to order. I get lost in all of the threads i read. Thanks, John Quote:
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68 C10 SWB SS 5 lug power disc brake conversion 2.5 inch drop spindles van tilt column Air Ride Technologies Cool Ride air bag kits Performance Online tubular upper control arms and shock relocator kits ECE super track panhard bar 1 piece side windows |
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#18 |
Registered User
Join Date: Mar 2015
Location: Utah
Posts: 750
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Re: 67-72 Electric speedo
I cut it out with a cut off wheel and sanded the edges smooth with a DA sander. You're right, tin snips would probably be hard to use and would likely crack it.[/QUOTE]
I took the trip reset off then cut it out with a band saw, and then sanded the burs off with a piece of 120 grit sand paper. Could do the same think with a jig saw for those of you that don't have a band saw |
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#19 |
Registered User
Join Date: Dec 2015
Location: Columbia, SC
Posts: 44
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Re: 67-72 Electric speedo
Are there still sets available? If so I would like to get one
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#20 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 67-72 Electric speedo
Yes, PM sent.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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#21 |
Registered User
Join Date: Mar 2015
Location: Utah
Posts: 750
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Re: 67-72 Electric speedo
This definitely is a feasible mod that the average guy can do. I'm 16 and am doing this. The only thing i bought was the basic package from ls1nova, and the s10 instrument cluster. I am currently doing the finishing touches before i start to wire it all up, and am extremely happy with the way it is turning out
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#22 |
Registered User
Join Date: Aug 2007
Location: Kentucky
Posts: 828
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Re: 67-72 Electric speedo
Scribed. Sorry for the PM eric, prolly should have read all the pages first
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#23 |
Registered User
Join Date: Dec 2010
Location: NC
Posts: 666
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Re: 67-72 Electric speedo
What is the purpose of sticking the new decal to the old (S10) gauge face? Why not stick the new decal directly to the clear plastic?
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#24 |
17's too small
Join Date: Oct 2004
Location: Las Vegas, NV
Posts: 335
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Re: 67-72 Electric speedo
If im following you (decal on C10 clear plastic) then the decal would be in front of the needls. The depth would be off and you wouldnt even see the speedo needle.
Some of his pictures go out of order, like he shows the decal being applied to the S10 clear plastic and then a couple pictures later the S10 speedo is temp installed and there is no decal on it. This is prob so that it doesnt get scratched up while he is working on it. That might be what is confusing you. Or maybe you mean, why is it stuck to the old black S10 guage instead of the clear S10 guage part, well I think this is to keep everything aligned properly. Great how to thread ls1nova71!
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68 C10 SWB SS 5 lug power disc brake conversion 2.5 inch drop spindles van tilt column Air Ride Technologies Cool Ride air bag kits Performance Online tubular upper control arms and shock relocator kits ECE super track panhard bar 1 piece side windows |
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#25 | |
Registered User
Join Date: Dec 2010
Location: NC
Posts: 666
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Re: 67-72 Electric speedo
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