Anyone know the way to hook one of these up? This is what I've found on it so far but I just wanted a second opinion before I do it.
PIN 2(PURPLE, some diagrams stated it's GREEN) data from pin 58 serial data.
PIN 4 (LT BLUE/BLACK)ground
PIN 5 (DARK BLUE)ground
PIN 16 ORANGE/BLACK)power at all times.
It just didn't sound right to me, it seems like there should be more than one wire going to the pcm and why would there be two that go to ground?
Last edited by low91; 01-10-2009 at 08:09 PM.
1991 Silverado-L33 5.3L, 212/218 .557 .562 115+4, ASP under drive pulley,180* thermostat, 90mm truck intake w/ LS3 throttle body. Shoenfeld conversion headers and duel Flowmaster exhaust. Performabuilt LVL 1 transmission and 23-2500 stall converter.
thats about right. i know on the standalone harness's ive made i only used 4 wires. power, ground and signal.
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
That's French.
The comm line is purple, power is black and/or black and white...what else is needed?
thought the black was the ground and the orange was the hot? iid have to check my diagram i made up to varify thisOriginally Posted by GasGuzzler
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
Oops. Missed some words
Orange is power. Black and/or black and white is ground. Some have both.
Thanks George.
Mine doesn't have any black wires.
1991 Silverado-L33 5.3L, 212/218 .557 .562 115+4, ASP under drive pulley,180* thermostat, 90mm truck intake w/ LS3 throttle body. Shoenfeld conversion headers and duel Flowmaster exhaust. Performabuilt LVL 1 transmission and 23-2500 stall converter.
Your OEM ALDL has no black or black/white wires?
That's weird.
Duh! No it's not. You have an OBDI '91. Did your swap harness come with an ALDL?
It came with the reworked harness I bought but wasn't connected it only has the four wires listed in the first post.
1991 Silverado-L33 5.3L, 212/218 .557 .562 115+4, ASP under drive pulley,180* thermostat, 90mm truck intake w/ LS3 throttle body. Shoenfeld conversion headers and duel Flowmaster exhaust. Performabuilt LVL 1 transmission and 23-2500 stall converter.
There is only one wire needed to the data bus. On an older truck, there is no other Class2 devices besides the PCM so it only needs to go to the PCM. Many components have redundant grounds. It needs power and ground for the scanner.
get it workin low91?
1991 Silverado ECLB
LM7-T56
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