99 limited - D and L light up at the same time
- Thread starter Roger.klotz
- Start date
Roger.klotz
New member
These harness part numbers are confusing. I have 82121-3G310A Does anyone know if 82121-3G281B or 82121-3G310B is a suitable replacement?
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brillo_76
Elite Member
I agree they are not only confusing but have to match.
You really have to watch those harness part numbers. Most of the time they are not the same. Those could be 3 different harnesses
How it goes on 3rd gens. 1996 through 1998 very similar but may not be exact.
1999 thru 2000 transition years
2001 and 2002 very similar but may not be exact.
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sleepydad
Senior Member
100% find an exact match, I used to think I was cleaver until my engine wire kicked my arse. I know better now.
do you have your VIN? handy. I will see if I can find one for you? if you want?
Roger.klotz
New member
jt3hn87r2x0198778
phattyduck
Elite Member
That harness is totally repairable... not sure what the issue is with finding a replacement?
-Charlie
-Charlie
sleepydad
Senior Member
82121-3G310A
821213G310 FEDERAL
821213G340 CALIFORNIA SPEC
I honestly don't think the "A" has anything to do with it. The "A" is not in any of the part numbers I see.
100% I would repair it but not everybody has the confidence, skills to repair it. even taking it off and taking it to somebody with electronics experience would be better than salvage I think? I just tossed a pile of wires into the recycle bin... I'm sure I just tossed what would have been a cut and replace section of that harness into the recycle bin, and they took it yesterday.
Roger.klotz
New member
I’m leaning towards replacement since I don’t know the extent of the melted wires throughout the harness. I’ll see if I can unplug and free the harness enough to pull it up through the engine bay. If it’s just a small portion of damaged wires, repair shouldn’t be too hard. Having a replacement is peace of mind.
phattyduck
Elite Member
I can't bring myself to throw away the 3 or 4 boxes of wires I have... Though someday I will need to, I suppose! I like having access to OEM wire and connectors when needed. (I don't have that section for a '99 or I'd offer it up)
-Charlie
Roger.klotz
New member
I exposed more of the harness under the truck and the only visibly damaged wires were white/red and black/yellow. I re-insulated with heat-shrink, but ran out of light before I could test continuity. Hopefully that's the extent of the damage to the harness, but with the light for L coming on, I thought the light green wire would be exposed as well.
Roger.klotz
New member
Bad news after the harness repair, now D,L and R all light up together.
brillo_76
Elite Member
Roger.klotz
New member
I’m close to throwing in the towel on this 3rd gen, but I sure would love to keep my dream truck alive. Is there any issue with driving the truck by disconnecting the neutral safety switch harness behind the glove box after I start the truck? I did this yesterday to move the truck about 10 miles to its final resting place and it seems to drives fine. I can live without gear indicator lights. The R light still comes on in the dash with the connector behind the glove box disconnected. I think there is a short somewhere in the harness behind the dash maybe where the wiring for the R light joins the bundle to the cluster.
Roger.klotz
New member
I did swap out the neutral safety switch with a new unit, but that was before I re-insulated the wires. I can swap it out again to test now that the wires are re-insulated and report back. Is there a continuity test for the NSS that I could do off the truck?
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