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04-07-2021, 07:16 AM
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#1 |
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Streetkingz_chri55
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14 ss l99 harness in a 12 l99
So my headers burnt the part of the harness that runs to the tcm...I bought a 14 l99 engine harness for cheap to cut the Part off that I need and solder it to mines. But don't know if I want to do that or replace the whole harness.. so my question is will a 2014 l99 engine harness be plug and play with a 2012 l99.. or is it ok to cut and solder or try to find a 2012 l99 harness
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04-07-2021, 08:50 AM
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#2 |
 
Drives: 2012 camaro 2ss rs L99 Join Date: Feb 2017
Location: North Sioux city SD
Posts: 446
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If you have the time and skill I always say fix what you have.
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2012 2SS/RS, L99, no cats/mufflers, Ported intake manifold, fuel rail upgrade, ID1050x injectors, Vmax throttle body, 25% UDP, GPI DOD delete, GPI SS3, GPI cnc heads, GPI – 5/16″ Hardened Pushrods, BTR trunion upgrade, BTR .660 springs, pcv revamp w/dual catch cans, Circle D 3800, full BMR suspension & bushings. ZL1 fuel pump, HPT programmed fpcm. JMS bap, Snow VC-50 methanol setup. custom 4gal methonal tank, vs7875 turbo, FMIC, precision 46mm WG, 50mm BOV, 3bar map, SJM line lock, Innovate SCG-1, Hurst shifter with tap shift mod, ×2 Holley 14" fans Diy E85, Diy auxiliary pump
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04-08-2021, 10:46 AM
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#3 | |
 
Drives: Ashen grey, 1SS, L99 Join Date: Aug 2016
Location: Oklahoma
Posts: 526
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Quote:
 OP, if you have the time I would replace the whole harness but that is a task. If you need it done ASAP then splice it. I don’t know if the harnesses are plug in play only because 2013 and up have electronic power steering. So you might be better off splicing it.
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Roto-fab CAI, Nick Williams 102mm TB, LOD X1 V3 intake manifold, GMPP LS3 heads, Night Fury cam, TSP 2” long tubes, Corsa ZL-1 catback, Nitrous Outlet 102mm plate kit/150 shot, NGK BR7EF plugs with Taylor plug wires, DSX flex fuel kit, ZL-1 fuel pump and injectors, B&M deep trans pan, Yank 3400 converter, 3.45s with BMR Delrin bushings, mishimoto 169° Thermostat, GM ground effects, T-Rex upper grill, Z/28 Spoiler, Lolly pop Lime brake calipers, ZL1 10 spoke wheels, 12” subwoofer, and custom paint matched interior.
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04-08-2021, 03:21 PM
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#4 | |
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Drives: 2012 camaro 2ss rs L99 Join Date: Feb 2017
Location: North Sioux city SD
Posts: 446
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Quote:
You yourself gave an answer that is leaning towards fixing what he has vs swapping the whole thing. Why is my answer "not good" ?
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2012 2SS/RS, L99, no cats/mufflers, Ported intake manifold, fuel rail upgrade, ID1050x injectors, Vmax throttle body, 25% UDP, GPI DOD delete, GPI SS3, GPI cnc heads, GPI – 5/16″ Hardened Pushrods, BTR trunion upgrade, BTR .660 springs, pcv revamp w/dual catch cans, Circle D 3800, full BMR suspension & bushings. ZL1 fuel pump, HPT programmed fpcm. JMS bap, Snow VC-50 methanol setup. custom 4gal methonal tank, vs7875 turbo, FMIC, precision 46mm WG, 50mm BOV, 3bar map, SJM line lock, Innovate SCG-1, Hurst shifter with tap shift mod, ×2 Holley 14" fans Diy E85, Diy auxiliary pump
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04-09-2021, 01:16 AM
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#5 | |
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Drives: Ashen grey, 1SS, L99 Join Date: Aug 2016
Location: Oklahoma
Posts: 526
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Quote:
OP: should I swap harnesses or splice my current one? You: fix what you have.... OP: but I have both.... You:FIX WHAT YOU HAVE! OP: 
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Roto-fab CAI, Nick Williams 102mm TB, LOD X1 V3 intake manifold, GMPP LS3 heads, Night Fury cam, TSP 2” long tubes, Corsa ZL-1 catback, Nitrous Outlet 102mm plate kit/150 shot, NGK BR7EF plugs with Taylor plug wires, DSX flex fuel kit, ZL-1 fuel pump and injectors, B&M deep trans pan, Yank 3400 converter, 3.45s with BMR Delrin bushings, mishimoto 169° Thermostat, GM ground effects, T-Rex upper grill, Z/28 Spoiler, Lolly pop Lime brake calipers, ZL1 10 spoke wheels, 12” subwoofer, and custom paint matched interior.
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04-09-2021, 03:15 PM
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#6 |
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Drives: 2012 camaro 2ss rs L99 Join Date: Feb 2017
Location: North Sioux city SD
Posts: 446
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*okie dokie*
 I reccomend that you fix what you have with the parts you got from the other harness. It's a real headache in most cases to swap out the whole harness, if you were going to do that it would be a good time to do a wire tuck and shorten/re-route and eliminate some stuff though.
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2012 2SS/RS, L99, no cats/mufflers, Ported intake manifold, fuel rail upgrade, ID1050x injectors, Vmax throttle body, 25% UDP, GPI DOD delete, GPI SS3, GPI cnc heads, GPI – 5/16″ Hardened Pushrods, BTR trunion upgrade, BTR .660 springs, pcv revamp w/dual catch cans, Circle D 3800, full BMR suspension & bushings. ZL1 fuel pump, HPT programmed fpcm. JMS bap, Snow VC-50 methanol setup. custom 4gal methonal tank, vs7875 turbo, FMIC, precision 46mm WG, 50mm BOV, 3bar map, SJM line lock, Innovate SCG-1, Hurst shifter with tap shift mod, ×2 Holley 14" fans Diy E85, Diy auxiliary pump
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04-09-2021, 06:02 PM
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#7 |
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Streetkingz_chri55
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Thanks everyone
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04-12-2021, 10:03 AM
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#8 |
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Streetkingz_chri55
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Another question.. I understand that over heated wires can send the transmission into SAFE MODE. But could that also make the car have converter problems... such as when it get up to Temps it bogs from a light and I can't stall it up or pulls the rpm down at idle.. transmission shifts perfectly
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04-12-2021, 07:52 PM
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#9 |
    
Drives: Never just fly under the radar Join Date: Jul 2015
Location: Kansas
Posts: 1,531
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Just my $.02 for your 1st question. You probably already know but suggest remembering when splicing and soldering wires you can change the resistance in the wire.
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