Modify your own Standalone LS Wiring Harness into an LS Swap Chevy GMC OBS Truck
Channel: Laurenceville Garage
Date: 2022-03-31

Part 23: The Chevy OBS Project Truck needs wiring! What are your choices?: 1) Buy a new LS swap harness, 2) Send your existing harness off to someone else to modify or 3) Do the work yourself. The first 2 options are great options to have, but, they also come with a higher price tag. I chose to go with option 3. 
There are a number of videos out there that cover the main points of the process. I decided to make this more general and what I did specifically for my swap into a 1991 Chevy OBS. However, the tips and things I did are applicable to most any other project vehicle. My project was specifically needing to be for 1) Drive by wire, 2) include a 1 wire sanden a/c compressor, 3) cruise control to work, 4) 3 wire temp sensor, and 5) No electric fans, but with wiring to install in the future if I change my mind.

While this process looks very intimidating, it is not so bad. Keep an eye  on your overall project, but focus on smaller parts so it does not become overwhelming until you get familiar with the process. It always takes more time (at least for me) than most videos actually show. Take your time, relax, get comfortable and get a beverage. If I can do this, I promise you can do it as well. BUT before you just jump in, do your research about each part you can think of. Have some answers before you start cutting. You will need a soldering iron/gun and solder, heat gun or other way to shrink the heat shrink (always use marine heat shrink, it seals on the inside as well to keep moisture out), wire cutters, ice pick or very small screw driver for pin removal, an ohm meter is very handy to have, masking tape, sharpee, electrical tape and or cloth tape. If you get all this together before you begin, you will have fewer interruptions as you work. GOOD LUCK AND HAVE FUN!!

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Parts used for harness modifications:
1) cloth tape, various sizes of plastic wiring loom, 2 relays, 2 relay holders, a 4 fuse box, assortment of spades, some additional 12 ga and 16 ga wire, moisture resistant marine heat shrink tubing. approx $75
2) PCM reprogrammed $75
Total: ~$150.00

Running total of $$ for project Shop Truck:
Part 1 Truck total price $1,308.00 
Part 2 and 3 (control arms) $230.76 
Part 4 Front brake/spindle rebuild $196.93 
Part 5 Cost of Donor + parts sold $265.00 
Part 6 Engine parts $438.93 
Part 7 oil pan issues $45.04 
Part 8 oil diverter $27.01 
Part 9 Truck bed removal $00.00 
Part 10 Rear suspension lowering/rebuild $226.84 
Part 11 LS fuel pump/hose upgrade $99.99 
Part 12 Rear disk brake conversion $544.16 
Part 13 Pulling engine/trans + clutch/flywheel $316.47 
Part 14 Steering shaft upgrade -$17.64 
Part 15 Front suspension removal + LS motor mounts $113.99 
Part 16 New front suspension/steering install parts $359.02 
Part 17 OBS to NBS master cylinder upgrade $99.97 
Part 18 DBW modifications $0 
Part 19 NBS rear sway bar install $63.91
Part 20-21 A/C install not included
Part 22 P/S, fuel, a/c hoses modified or made $180.06
Part 23 Wiring harness mods $150.00
TOTAL PROJECT $5070.84

Disclaimer: This video is intended for entertainment use only, if in doubt as to your mechanical ability, consult a professional to perform the needed work. Thank you for watching this video on the Laurenceville Garage channel, if you would like to help support this channel you can do so through the following links. Thank you! Donate - CahApp- @$Laurencevillegarage Paypal - paypal.me/LaurencevilleGarage Venmo - LaurencevilleGarage Zelle - laurencevillegarage@yahoo.com Email: laurencevillegarage@yahoo.com 

#lsswap #lsobs #obs #88-98chevytruck #ls #lsx #laurencevillegarage