1980 LS K5 Bulkhead Wire up for LS Swap 

man this is one of the best bulkhead wiring vids I have come across thus far. really appreciate it

Bro you help so much with this about the sending unit to gas tank

One of the great wonders of the LS wiring right here. Awesome job!!!! Thank you!!!!!!

Just bought a 1980 K5 running but gauges do not work. Have been chasing wires and researching all over the interweb. The answer I was looking for was at the very end of your video. The Fuel Sending unit connection. Thank you for the video. It was very helpful.

Great video. Appreciate you taking the time to show us how it's done

I’m glad you made this video cause I been wondering about the wiring thanks for sharing

Best video I’ve seen yet on wiring a LS

Hey buddy thx for your video it help me to start my 1983 gmc c 10 for this wiring harness

Great video! Well explained man. Thanks!

This was alot of help to me. Thank you

great video well explained

You man are the s!&t..... I needed all this info you gave... Keep up the great videos.

Heck yeah this will help when I start my 6.0 with 4l80 swap to 81 1 ton Chevy project 😮

Thanks man! Much appreciated.

Awesome video

When I'm done cutting my teeth on the LS swap in my 2000 zr2 s10, I'm LS swapping my 87 k5 next. For the zr2, I bought a low mileage L33 aluminum block (baby ls1) 5.3L that weighs the same as the factory iron block, iron heads 4.3L vortec engine. That way I don't have to screw with torsion bars squatting the front end from a heavier engine. I'm also adding a 70mm turbo to run 10-12 psi of boost. The 70mm should spool rather quick at low rpm but still feed it to the factory red line. When I'm done with it I'll likely add a 5.3 or 6.0 to the K5. I may boost it also or it may just get a bottle like all of my other builds. Yes my zr2 is my first LS swap and turbo build. I'm not concerned with my ability to do it considering I built a fully forge bottom end stroker 383 with a full racing top end when I was 16 and installed it in my 89 formula firebird. The full race th350 with reverse manual valve body died after 3 months. So I converted the car from auto to a t56 6 speed manual that came out of an lt1 camaro SS. All of this was done to my daily drive 89 formula firebird that was originally a tpi305 with a 700r4. I couldnt get the 305 faster than a 14.2 and I wasn't going to waste money on a 305. This was all back on 2000-2001 when the only prefabbed part I could get was a cross member for the t56 swap from spohn. I made my own center console out of steel that went all the way up under the radio like a factory one and I used part of it for factory window and mirror switches plus aftermarket switches for nitrous, ignition, fans, and fuel pump. It worked alot better than a 4th gen ls1 or lt1 6speed console. I've also done alot of bolt on to my now daily driver mid10 second 125mph 2002 WS6 Trans Am 6speed that now has 57k miles on it. I bought it box stock in mint condition in 2012. It ran 12.8s at Darlington dragway on street tires, 3 weeks after I got it. It's still a completely stock engine with just bolt ons and free mods. The zr2 isn't easy but it will make the k5 swap easier after dealing with the really confined space of the s10 engine bay. I never buy a vehicle and leave it stock because no company makes a vehicle that is good enough in factory form. Always built.

Good job man. Glad your plugging along. I did my ls swap on my 84 c10 and did all the videos cover everything. I also have a video showing the bulkhead wiring even how to make the stand alone harness. I just found your channel and I subbed. Keep up the good work and good videos

Great video

Very nice explanation

U helped me tremendously 👌🏿👌🏿👌🏿

Excellent thanks for the info.

Great video thanks!

I appreciate the content. I am in the process of rewiring my 76 with the speedway 22 circuit kit. But it doesn’t have a dedicated reverse light wire. It does have a third break light wire but I’m not sure if I can use that to plug in to the neutral switch for my reverse lights

Doing a LS swap on my 83 C10 hope this helps me out

I'm doing this in my 87 irocz I hope this works , I've tryed everything else . If it works I'm a youtuber and your definitely getting a shout out

Good video

Badass man thank you

Great explanation! Where did you get that fuse box?

So what did you end up doing with those group of wires that were from the alternator and fire wall?

for the temp sending unit what wire did y hook the green to? My sending unit is also 3 wire

What did you do with the group of wires running through the firewall to the glove box? Looks like a computer there connected to.

The pink coil wire that's the wire for the ignition key on cranking wire from the ls fuse block?

The one that goes to the alternator a that the one you would hook up to a resisting light on a older motor ?

Did you run the ignition wire to the relay or did you run it to the fuse box it self i have mines ran to the ignition wire on the harness and then into the relay but my car is not starting it’s only cranking over please help

⁠​⁠did you wire the smaller alternator wire (the smaller wire that was part of the plug-in for the old alternator) came out of the firewall to a constant 12v source (straight to the battery) or to a switch-on 12v source? 7:33

where did you buy the plugs to cover the holes in the cab???

My main power feeds 12v but my builk head is powerless. Any ideas? No fuses are blown.

Thanks

And to think a 1970 LS5 Pontiac started it all !

What was the final wires for the tep and oil pressure

is the wireing same going from a straight 6 to a 454 chevy big block? tia

I would think a bigger wire to power the fuel pump might be in order. Otherwise, great video well documented

Can you show me how exactly its sopose to be but with the stock engine I have a 350 and want to fix all this and what cables are extra that I'm not sopose to have

the harness of the 80s is similar to that of the 72?

Good vid. Just wondering if this wiring schematic worked out for you or if you ended rewiring anything?? Thanks

Also, depending on the year, certain square body trucks had a BROWN wire for the alternator. Ill put money that your truck didn't start this way

Is this good to use on 76 K10 GM ?

So what color powe my fuel pump and relay ..on standalone its grey

The factory used fusable links to protect the truck wiring on a terminal block on firewall . The hvac controls also are run from there . What did you do to protect your truck from burning to the ground in a fault situation ?

I am curious more about the main battery line and how it connects. The guy who did my harness removed the large red box, so now I am trying to figure out a little about how I should go about connecting it... Does the main feed just need to go to the big lug on the starter?

Did you ever figure out which wire goes to the alternator gauge? Did you end up getting rid of the extra alternator plug wires? Thanks for the videos!

Hey great video it helped me a lot...... but I’m going carb on my ls and I have the ls alternator.... on your battery positive wire, that originally went to the starter? And there is another plug on that wire and that went to the alternator plug?

Ok well I seen all videos for running a ls motor but I want to put a 95 350 5.7 throttle body in a 98 GMC Sierra that has a 5.7 350 vortec in it. Can this be done? Oh, and awesome video, thx.

You haven’t made videos in a while how is project going

Hey man i was curious where are you running your key on/cranking wire?

K5 I hooked my pink up by my ignition switch should I chase it down before the fuse block or is pink all the way around

This is a great video. Thank you for uploading it. But I have a question. I went to start my dad's 1967 Olds Cutlass with 4.8LS (Engine from 2003 Chevy Silverado) Conversion and smelled fuel, I luckily had the exhaust and headers separated. I saw fuel spraying out of the passenger side of the header. I Swapped injectors for Cylinder #4 & #6 after smelling fuel on the plugs. I restarted the engine and the fuel still leaked unburned raw fuel. Any Ideas on how I should fix?

Hello. I've got a question... if I only replace the harness, do I still need to have it reprogram my ecm?

Is there no schematics for these miners a 89

Do you have a part number for that temperature sensor you screwed into the head for your electric fans?

So were they labeled correctly? I really need to know if so because my truck has a big mess in the wiring a real hack job. Hope you can reply if they were so i can fix mine.

I have a 1988 Chevrolet Caprice and I don’t have any idea what wire I need to connect from my bulk head

What stand alone harness you use?

Any chance of making a video for a stock sbc350?

Please explain the wiring of the computer and how it is delivered

If running a Turbo 350/400, you will have to purchase these 2 items to hook up your VSS(vehicle speed sensor) wire. www.summitracing.com/parts/dak-sen-01-4160?seid=srese1&cm_mmc=pla-google- www.summitracing.com/parts/dak-sgi-5 References: Schematics, parts list etc. , See below : - Wiring Harness Research: www.LT1Swap.com LS Fuse Block and Relay Diagram: bit.ly/LS_Harness_Diagrams < great schematic. Tools and Parts used: Qiorange 8 Pin Connector: amzn.to/2lNgMW8 Doorman Fuse Block: amzn.to/2kOBR2R e-Ting 5 Pin Relay Socket: amzn.to/2kOzzRk Absolute RLS125 Relays: amzn.to/2lNp4gR Vice Grip Wire Strippers: amzn.to/2lI3fie Loom Fabric Tape: amzn.to/2xZng69 Here is what I used for the wiring: - Pink (AWG18) - This was reused from the original harness - Yellow (AWG16) - Fuel Pump Feed - Red (AWG10) - Battery Hot - Purple (AWG10) - Keyed Hot

Would the bulk head be the same from a 1980 Oldsmobile cutlass?

Your positive wires make no sense ..your first wire is CONSTANT power to PCM. Then your second wire is also a pcm power wire but switched? Thats ass backwards my guy

Why he kept saying STANDALONE? That wiring to the PCM is 👎🏾 NOT a standalone, That’s a Nasty rework harness ! ...that’s why people keep getting problems when doing an LS SWAP ... Wiring is the KEY and that’s 👎🏾 NOT good at all !

Great video

where did you buy the plugs to cover the holes in the cab???