Looking for ls wiring pigtails?

87_bigbadzuk · Jan 25, 2016

Anyone got a good source for plugs for ls harness.
My harness is a 04 5.3 yukon and I need the maf, ckp, and 2 o2 plugs. I found efi connection looking at 50$ plus shipping. Anyone got any other sources they recommend for this?

patooyee · Jan 25, 2016

Junkyard?

bighook · Jan 25, 2016

Brendon @ LT1 Swap.com 417-274-1638. He'll have everything you need.

d_daffron · Jan 25, 2016

I can probably hook you up with some used pigtails for the cost of shipping if you want me to look. I have a few old harnesses.

How many wires in the MAF connector

Which O2 connector do you need? There are two types, 4 wires in a square shape and 4 wires inline.

fabricator1 · Jan 25, 2016

I've bought maf and o2 harness plugs from my local GM dealer. They were really reasonable

zjtrey · Jan 26, 2016

https://www.eficonnection.com/eficonnection/default.aspx

87_bigbadzuk · Jan 26, 2016

I think I already said efi connection but thanks though

grcthird · Jan 27, 2016

Napa part numbers
ECH EC83 mass air flow
ECH EC705 female o2 sensor
ECH EC400 male o2 sensor
ECH EC1031female o2 sensor
ECH EC111 crankshaft

FACTORY PART NUMBERS
13585848 02 SENSOR DOWNSTREAM
15305960 02 SENSOR DOWNSTREAM
15306319 02 SENSOR DOWNSTREAM
The GM catalog only shows a part number for downstream 02 but labels it as a multiuse connector, most if not all LS trucks use the same 02 sensor plugs upstream and downstream.

15306120 crankshaft sensor
13585316 crankshaft sensor