Electrical not my thing! Need some help.

[Dad's69RR]

The NSS has the two prongs at the tranny and plugs into connector at bulkhead and female blade that plugs into starter relay.

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Backup harness, engine harness, and circuit board is new everything else is original. I also replaced all the dash cluster bulbs with LED's. I will take some pictures tomorrow evening and post.

So let me review, you replaced just about everything, unplugged everything and the left turn lamp in the cluster stays lit? Well dude it's in the harness or the connector or the circuit board for the cluster.

Let's start with the harness - Is it original or new like year one or something? If its original then we will move on.

Connector for the circuit board can get loose connections or have been messed with

Circuit board is it new? If not check it for blown traces and broken solder joints on everything.

I'm thinking like one of the other members you have a positive 12vdc coming from somewhere to the lamps for the cluster which should not be there. You are going to have to use the wiring diagrams to trace it all out and make sure what you have is correct. Take some pics maybe one of us will recognize a flaw right off who knows?

 

[Glenwood]

getting mixed up with another post...you have the 4 speed. It's not a NSS, but a back up light switch. It should not go to the starter relay.

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both the white and violet should go to the bulkhead C&D according to the schematic. The white basically needs a power source.

 

[Dad's69RR]

So disconnect from the starter relay? So the branch that comes off the harness(white trace) doesn't go anywhere?

 

[Glenwood]

a 4 speed doesn't require a NSS. I'm not sure if the starter relays are different but a jumper to the mounting bolt will work fine.
what branch? is it white? some pics will help when you get a chance.

 

[bigmanjbmopar]

Look at the second diagram I posted where it shows the NSS for either 4 speed or Auto follow the wires

 

[Glenwood]

Look at the second diagram I posted where it shows the NSS for either 4 speed or Auto follow the wires

exactly. white connects to a splice in the dash area which is 12V+ from the ign switch, through a fuse.
violet makes its way through to the back up lights, again 12V+ once in reverse.
nothing on the relay from a NSS, because that's automatics only. If it needs a ground, a jumper will do.

 

[Dad's69RR]

Look at the second diagram I posted where it shows the NSS for either 4 speed or Auto follow the wires

I guess what confused me with the new back up harness(it is black wire and a black with white trace wire, this one has a branch coming off) has the plug on the end that you cannot hook up wrong but the branch I thought went to starter relay. So the G-blade on starter relay should just go to ground or it is just open?

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Got it! Could this have been messing with lights in the dash??

exactly. white connects to a splice in the dash area which is 12V+ from the ign switch, through a fuse.
violet makes its way through to the back up lights, again 12V+ once in reverse.
nothing on the relay from a NSS, because that's automatics only. If it needs a ground, a jumper will do.

 

[Glenwood]

I guess what confused me with the new back up harness(it is black wire and a black with white trace wire, this one has a branch coming off) has the plug on the end that you cannot hook up wrong but the branch I thought went to starter relay. So the G-blade on starter relay should just go to ground or it is just open?

go to ground. It's the other half of the relay coil and needs to be grounded to complete the circuit when you turn your key.

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Got it! Could this have been messing with lights in the dash??

maybe...one step at a time!

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just to keep it interesting, some 4 speeds, ('70 & up?) installed a clutch pedal switch which replaces the NSS used on automatics.

 

[Dad's69RR]

maybe...one step at a time!

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just to keep it interesting, some 4 speeds, ('70 & up?) installed a clutch pedal switch which replaces the NSS used on automatics.

The tranny is not numbers matching! It is actually the 18 spline hemi 4 speed but not sure what year it is? Everything else matches up.

 

[Glenwood]

should be under the dash if so equipped. age of the tranny wouldn't matter. not sure if the new harness makes provision for this though.

 

[Dad's69RR]

Did a test this evening with Steering column harness unplugged and Emergency flasher unplugged. I have power at #1 pin Lt GRN and #4 pin BLACK-TR in the steering column harness. Following the Lt GRN wires I also have power in the emergency flasher plug and also at the #4 pin at round connector to circuit board. The emergency flasher plug also shows power at the red wire.

Tracing these I know the Lt GRN goes out to the turn signals but the Black-TR goes to the horn relay. What am I missing? Why would any of these have power with just the battery connected other than maybe the red wire to the emergency flasher. Just seems like I am missing a ground or something!

 

[bigmanjbmopar]

Red to flasher is always hot. you unplugged the e flasher but what about the turn flasher?

 

[Dad's69RR]

Sorry unplugged turn flasher also!

 

[Glenwood]

Is the emerg flasher in it's clip and mounted on steel on the dash? It needs to be grounded to work properly. I'm not sure but I do not think the red should be live until the circuit is activated. The pink wires are live straight from the fuse.
Try switching leads on the emerg flasher.
The lt green leads should not be live and I'm wondering if your emerg switch is on or there's a problem in it.

The horn relay wire may show power because it's travelling through the relay coil. This should be normal as it gets grounded when you push the horn ring which completes the circuit to pull in the relay contacts.

 

[Dad's69RR]

Is the emerg flasher in it's clip and mounted on steel on the dash? It needs to be grounded to work properly. I'm not sure but I do not think the red should be live until the circuit is activated. The pink wires are live straight from the fuse.
Try switching leads on the emerg flasher.
The lt green leads should not be live and I'm wondering if your emerg switch is on or there's a problem in it.

The horn relay wire may show power because it's travelling through the relay coil. This should be normal as it gets grounded when you push the horn ring which completes the circuit to pull in the relay contacts.

You have to be kidding me! The flasher is floating in air! Where is the clip suppose to be located? One thing to note there was not an emergency flasher plugged in until I started troubleshooting this problem. Does turn signal flasher also have to be in a clip?

 

[Glenwood]

Later flashers, like 3 prong have a separate ground wire I believe but the older two prongs metal body has to be grounded to work right.
maybe it fell out of the clip. try touching it to bare metal and see it the issue changes.

 

[dla4567]

I have a 2 prong flasher with a plastic body, (not grounded), no problems with it.

 

[Glenwood]

Plastic body flashers are usually electro-mechanical vs the metal body which are thermal. The plastic body types are not polarity sensitive unlike the thermal types and do not require a ground. I may be wrong about grounding the metal bodied flasher to the grounded clip, but if memory serves me correctly (only one coffee so far this morning!) the flasher clicks once when power is applied and sort of freezes until grounded.

 

[dla4567]

Good to know, thanks for the info.

 

[Glenwood]

Here's an interesting link to help explain flasher differences. It really depends on what type of flasher the op is using. After reading this article, I'm wondering if the LED lamps in his cluster are causing the issue...time for another coffee
http://www.tetrix.com/Flasher Primer.pdf