Need wiring help with ls swap

[Ls swap c1500]

Im a new member here. I have read alot of posts but haven't found what im looking for yet. I need wiring help. I have a 93 rclb 2wd. Im putting a 6.0 with 4l60e i want to run stock 6.0 harness. Fuse box. And computer. Also wanting to use the stock 93 guages which im to the understanding i have to run both harnesses????. I have went over wiring diagrams and nothing seems to make sense. Any help, pics, detailed info. Is greatly appreciated. Thanks in advance to any help i can receive.

 

[RDF1]

I can help you get the engine/trans harness working. I know nothing about getting the 93 gauges working tho.


Sent from my HiDiNg PlAcE

 

[Ls swap c1500]

Any help is much appreciated. Lol

 

[Ls swap c1500]

I can help you get the engine/trans harness working. I know nothing about getting the 93 gauges working tho.


Sent from my HiDiNg PlAcE

Any help is greatly appreciated.

 

[HPIII]

What year 6.0? The voltage gauge should continue to work as you will retain supplying power at the firewall with the wire that also used to connect to the alternator. The oil pressure gauge and coolant temp will reuse the existing sensors/wiring you will just need adapters for the 6.0 threads/ports. Speedometer should be one wire output from the 6.0 ecm that connects to one wire from the DRAC box behind the glove box (may have to adjust output from the 6.0 ecm). Don’t know about tach as I’m running aftermarket.

 

[Ls swap c1500]

What year 6.0? The voltage gauge should continue to work as you will retain supplying power at the firewall with the wire that also used to connect to the alternator. The oil pressure gauge and coolant temp will reuse the existing sensors/wiring you will just need adapters for the 6.0 threads/ports. Speedometer should be one wire output from the 6.0 ecm that connects to one wire from the DRAC box behind the glove box (may have to adjust output from the 6.0 ecm). Don’t know about tach as I’m running aftermarket.

The 6.0 is a 2000 model. Do you happen to know which wires i need to hook where? Im using the stock harness- un touched. Im also using a aftermarket tachometer

 

[HPIII]

You are going to have to modify the stock 6.0 harness(or buy a stand-alone harness), lt1swap.com is your friend. There is a ton of information for the ecm pin out and wiring schematics. I don’t know exactly which wires go where.

 

[Ls swap c1500]

You are going to have to modify the stock 6.0 harness(or buy a stand-alone harness), lt1swap.com is your friend. There is a ton of information for the ecm pin out and wiring schematics. I don’t know exactly which wires go where.

i was really hoping not to hear that. I keep seeing pics on here of people using the stock ls under hood fuse box. If you rework the harness can you still use the under hood fuse box.

 

[blacksport]

i just did this with a 5.3
you don't need to use both harnesses i pulled the old harness out 1 wire at a time sounds harder than it is all that was really left was the ac wires and the oil pressure gauge and whit tach wire from the old coil + 1 wire from the water temp gauge i also went with drive buy cable
voltage works nothing needed
oil pressure i used the stock gauge and adapter works like a champ
.....https://www.amazon.com/gp/product/B07BKBFXYM/ref=ppx_yo_dt_b_asin_title_o05__o00_s00?ie=UTF8&psc=1
water this is the best way to go
https://www.amazon.com/gp/product/B005OVAUN2/ref=ppx_yo_dt_b_asin_title_o06__o00_s00?ie=UTF8&psc=1

xc_hide_links_from_guests_guests_error_hide_media

i was able to use my old TPS plug it was the same plugged right in
and last to make the tach work
https://www.ebay.com/itm/1K-Ohm-1-4-Watt-1-Metal-Film-Resistor-5-Pieces-Prime-Parts-US-Seller/163061862270?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
great bracket
https://www.ebay.com/itm/LS-R4-A-C-compressor-bracket-99-2013-LQ4-LQ9-LY6-Vortec-Truck-A-C-Swap/161425298718?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
you need this for that to work
https://www.ebay.com/p/Belt-Tensioner-Assembly-Continental-Elite-49256/76950623
https://www.amazon.com/gp/product/B000C0YMYI/ref=ppx_yo_dt_b_asin_title_o09__o00_s00?ie=UTF8&psc=1
you can use the harness and slightly modify it i kinda wish i did.no matter what you do your looking at spending a few bucks with the amount of time i spent making SAH i kinda wish i just bought 1.the trans shift linkage was a problem for me
bolting the motor and trans in was the easiest part...........

 

[Ls swap c1500]

i just did this with a 5.3
you don't need to use both harnesses i pulled the old harness out 1 wire at a time sounds harder than it is all that was really left was the ac wires and the oil pressure gauge and whit tach wire from the old coil + 1 wire from the water temp gauge i also went with drive buy cable
voltage works nothing needed
oil pressure i used the stock gauge and adapter works like a champ
.....https://www.amazon.com/gp/product/B07BKBFXYM/ref=ppx_yo_dt_b_asin_title_o05__o00_s00?ie=UTF8&psc=1
water this is the best way to go
https://www.amazon.com/gp/product/B005OVAUN2/ref=ppx_yo_dt_b_asin_title_o06__o00_s00?ie=UTF8&psc=1

xc_hide_links_from_guests_guests_error_hide_media

i was able to use my old TPS plug it was the same plugged right in
and last to make the tach work
https://www.ebay.com/itm/1K-Ohm-1-4-Watt-1-Metal-Film-Resistor-5-Pieces-Prime-Parts-US-Seller/163061862270?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
great bracket
https://www.ebay.com/itm/LS-R4-A-C-compressor-bracket-99-2013-LQ4-LQ9-LY6-Vortec-Truck-A-C-Swap/161425298718?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
you need this for that to work
https://www.ebay.com/p/Belt-Tensioner-Assembly-Continental-Elite-49256/76950623
https://www.amazon.com/gp/product/B000C0YMYI/ref=ppx_yo_dt_b_asin_title_o09__o00_s00?ie=UTF8&psc=1
you can use the harness and slightly modify it i kinda wish i did.no matter what you do your looking at spending a few bucks with the amount of time i spent making SAH i kinda wish i just bought 1.the trans shift linkage was a problem for me
bolting the motor and trans in was the easiest part...........

Awesome info. I appreciate that very much. How did you do your wiring from the truck firewall to the stock ls harness? Sorry im just trying to make sure i don't screw anything up.