Wiring a Squarebody C10 for the Classic Instruments gauge cluster on an LS swap.
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- čas přidán 7. 09. 2024
- We are installing the @ClassicInstrumentsBoyneCity @HolleyPerformance cluster for the 1973-87 Chevrolet C/K10-20-30. In this video I go over the wiring from a stock cluster to the aftermarket cluster and what wires you will need from an LS swapped PCM that communicate with the instruments. A lot of this will apply even with a stock truck that has not been LS swapped. Please note that individual years and models have some differences in the wiring colors etc, you should verify each wire and color relative to your truck, Suburban or Blazer. Come back and watch our future content as I will post another video on the set up for the instrument cluster.
Thanks for talking us through it. Seems like I’m in the shop next to you!.
Thanks buddy! I tried to explain it best I could, there’s always some small stuff that gets forgotten or left out of course though.
Cant wait to see what that cluster looks like when its all lit up. Great explanation on the wiring set up as well.
You and me both! I appreciate the positive reinforcement lol! Spoiler alert, it looks good!!
Wiring makes me want to lay in traffic… your doing good dub!!
Lol come on it’s not that bad! Thanks dude!!
A very informative video. 👏
Thank you! Hope it helps people!
You’ll have to check my rewiring video
I will for sure!
@@cwsgarage its not out as of yet... still doing the grunt work... looming it all before installing it
@@DIRTVENTURE good luck! What engine/vehicle? Guessing a jeep haha.
@@cwsgarage it is a jeep.. and I put a 5 cylinder toyota diesel into it.
I have another one here with a chevy 350...
and a third with a 4.2 ltr that's been bored out 40 over. running a 600 cam holly, hei distributer. it sounds like the chevy 350
👍
where did you get the other covers for the AC VENT and windshield wiper
I'm not sure if I know what you're asking about. The windshield wiper switch on the 81-91 trucks, suburbans and blazers are on the turn signal stalk instead of under the cluster.
The AC vents are just the factory ones. The instrument cluster bezel is the factory bezel from 1986.
Good stuff man. New to the channel.
Where’d you get that wiring diagram book?
Thanks for watching! It’s actually just in the Haynes service manual for 1973-87 Chevy trucks and suburbans. It’s a little vague and doesn’t cover every detail that is specific to different optioned trucks but it’s somewhat helpful.
What would I do for my 2 white generator power lights that are for my alternator
Shouldn’t need to wire those in, I would just heat shrink over them. The 12v power is what feeds the volt meter now.
@@cwsgarage why wouldn’t I need them anymore? Don’t help power the alternator? If I don’t need them why were they installed like that previously? Thanks for the info ahead of time
@@averycole1408 I’m not sure if I understand. The 2 wires are just going to the old instrument cluster right? Did your truck have all gauges or “dummy lights”?
Where are you located? Judging by some of the stuff on your wall, maybe close to DFW?
Yes DFW area is correct. 👍
I have two pink wires for my fuel, one for each tank, how would I wire that to the gauge ?
Are they both going to the instrument cluster? I would imagine the selector switch determines which one is sending the signal to the gauge. I’ll see if I can find a better answer and get back to you.
@@cwsgarage yes they’re both going to the cluster. I would greatly appreciate any help
Are you sure that they are both going to the sending units of the tanks? When wiring this truck I only used one tank, but I don’t remember there being two wires for the sending unit at the cluster. I believe they ran through the switch then one wire to the gauge. What year truck is it?
@@cwsgarage yes. I rewired it all myself with the “painless” wiring harness
Ohh okay. I think you need to wire them to the selector and then from the selector to the gauge.
Check out this post on 73-87chevytrucks forum.
forum.73-87chevytrucks.com/smforum/index.php?PHPSESSID=f422194c9bc00ecd33fcae3b7216f1eb&topic=37989.0
I currently have 2 wires for tach but it says on use one? Which one do I use?
Two wires from the cluster or from the ECM?
@@cwsgarage if I’m not mistaken I have two wire from the ecm, but with this cluster it only says use one.
@@averycole1408 if you are using a gen3 LS then you need the Dark green with a white stripe, pin 50 on the red ECU connector. It’s the “4k” signal.
@@cwsgarage I’m just using a 350 sbc
Then you need to connect the white wire of the instrument cluster harness to the HEI "tach signal" you'll have to run a wire if your factory cluster didn't have a tach. There should only be one wire on the Classic Instruments cluster, the white one for a tach.