Blown06-New Build: Cage, 4-Link, Cog Drive, + Too Much More
01-23-2011 | 07:20 AM
#351
TECH Fanatic
Joined: Jul 2005
Posts: 1,396
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From: Galesburg Il
I've just about got the engine harness done and I've hit a small road block. I'm trying to figure out what to do with the Generator Battery Control Module. Here are some options, but with questions:
1. Keep it.
If I do end up having to use it, do I have to put it back near the battery or can I put it on the ground cable that goes from the motor to the frame? If I have to put it back near the battery then I'll have to run some additional wires back up to the front to hook back into the harness. As far as I'm concerned this is the **** option.
2. Get rid of it. Ok, how? I did a ton of searching on the forums tonight and I can't seem to find any definate answers. If I can get rid of it, how hard would it be to convert to a one wire alternator, and how do I get the factory volt gauge to work?
I did a ton of searching on the forums tonight and I can't seem to find any definative answers on deleting it. I have seen where some people take the brown and grey wire from the alternator to a switched 12v source with a resistor on one of the wires. But I can't find an answer on what to do about the rest of the wires. If I remember right, there are 7 wires that connect to the GBCM. 2 appear to be grounds (black w/white stripe), 2 feed into the under hood fuse box (red w/black stripe), 1 wire that appears to go back into the cab, possibly for the instrument cluster (orange w/black stripe) and then the brown and grey to the alternator.
My truck appears to be different than any year model before it as the research I've done shows the 05 and earlier trucks with the alt. wires going to the pcm. Mine don't.
I would appreciate some help on this, I sure its been done, I just haven't found anyone that knows how to do it.
1. Keep it.
If I do end up having to use it, do I have to put it back near the battery or can I put it on the ground cable that goes from the motor to the frame? If I have to put it back near the battery then I'll have to run some additional wires back up to the front to hook back into the harness. As far as I'm concerned this is the **** option.
2. Get rid of it. Ok, how? I did a ton of searching on the forums tonight and I can't seem to find any definate answers. If I can get rid of it, how hard would it be to convert to a one wire alternator, and how do I get the factory volt gauge to work?
I did a ton of searching on the forums tonight and I can't seem to find any definative answers on deleting it. I have seen where some people take the brown and grey wire from the alternator to a switched 12v source with a resistor on one of the wires. But I can't find an answer on what to do about the rest of the wires. If I remember right, there are 7 wires that connect to the GBCM. 2 appear to be grounds (black w/white stripe), 2 feed into the under hood fuse box (red w/black stripe), 1 wire that appears to go back into the cab, possibly for the instrument cluster (orange w/black stripe) and then the brown and grey to the alternator.
My truck appears to be different than any year model before it as the research I've done shows the 05 and earlier trucks with the alt. wires going to the pcm. Mine don't.
I would appreciate some help on this, I sure its been done, I just haven't found anyone that knows how to do it.
01-23-2011 | 01:30 PM
#352
I've just about got the engine harness done and I've hit a small road block. I'm trying to figure out what to do with the Generator Battery Control Module. Here are some options, but with questions:
1. Keep it.
If I do end up having to use it, do I have to put it back near the battery or can I put it on the ground cable that goes from the motor to the frame? If I have to put it back near the battery then I'll have to run some additional wires back up to the front to hook back into the harness. As far as I'm concerned this is the **** option.
2. Get rid of it. Ok, how? I did a ton of searching on the forums tonight and I can't seem to find any definate answers. If I can get rid of it, how hard would it be to convert to a one wire alternator, and how do I get the factory volt gauge to work?
I did a ton of searching on the forums tonight and I can't seem to find any definative answers on deleting it. I have seen where some people take the brown and grey wire from the alternator to a switched 12v source with a resistor on one of the wires. But I can't find an answer on what to do about the rest of the wires. If I remember right, there are 7 wires that connect to the GBCM. 2 appear to be grounds (black w/white stripe), 2 feed into the under hood fuse box (red w/black stripe), 1 wire that appears to go back into the cab, possibly for the instrument cluster (orange w/black stripe) and then the brown and grey to the alternator.
My truck appears to be different than any year model before it as the research I've done shows the 05 and earlier trucks with the alt. wires going to the pcm. Mine don't.
I would appreciate some help on this, I sure its been done, I just haven't found anyone that knows how to do it.
1. Keep it.
If I do end up having to use it, do I have to put it back near the battery or can I put it on the ground cable that goes from the motor to the frame? If I have to put it back near the battery then I'll have to run some additional wires back up to the front to hook back into the harness. As far as I'm concerned this is the **** option.
2. Get rid of it. Ok, how? I did a ton of searching on the forums tonight and I can't seem to find any definate answers. If I can get rid of it, how hard would it be to convert to a one wire alternator, and how do I get the factory volt gauge to work?
I did a ton of searching on the forums tonight and I can't seem to find any definative answers on deleting it. I have seen where some people take the brown and grey wire from the alternator to a switched 12v source with a resistor on one of the wires. But I can't find an answer on what to do about the rest of the wires. If I remember right, there are 7 wires that connect to the GBCM. 2 appear to be grounds (black w/white stripe), 2 feed into the under hood fuse box (red w/black stripe), 1 wire that appears to go back into the cab, possibly for the instrument cluster (orange w/black stripe) and then the brown and grey to the alternator.
My truck appears to be different than any year model before it as the research I've done shows the 05 and earlier trucks with the alt. wires going to the pcm. Mine don't.
I would appreciate some help on this, I sure its been done, I just haven't found anyone that knows how to do it.
Disable the "L" and "f" field alarms for the alt. Then go ahead with a one wire. The dash voltmeter should still work, afik. This is how I've run my 01 Vette and my old 03 1/2 ton
01-23-2011 | 02:25 PM
#353
01-23-2011 | 03:46 PM
#356
Unfortunately not.
01-23-2011 | 04:54 PM
#357
Like I said, disabling the DTC's for the two field circuits was what worked for me when I used a 1 wire alt in my 03 ecsb for the stereo upgrade as well as I've been running a 1 wire in my 01 Vette since I got it home from the factory. I'm not sure what you mean by the voltage regulator box though?
01-24-2011 | 06:13 AM
#359
When you get everything back together you can do a test by disabling the "F" and "L" generator alarms in the pcm, then unplug the field connector from the factory alt, leaving only the output wire connected. Start the truck and you may have to slightly rev the motor to say 2k-2.6k rpms for a second or two to generate a field in the stator (start producing voltage). If the truck runs and no alarm conditions occur your golden for a 1 wire swap.
