E-Bodies.org Cuda Challenger Forum

Technical Shop => Electrical & Audio => Topic started by: cavemanno1 on May 08, 2019, 11:54:01 PM

Title: Newbie questions :)
Post by: cavemanno1 on May 08, 2019, 11:54:01 PM
Hi guys!

3 weeks ago my '70 Cuda has had a few burned wires under the dash! Since then I have been trying to find someone to come out to fix it but no luck.
I'm in Hungary where our Cuda is the ONLY one in the whole country and we have maybe 15 classic mopars here.
I have tried every singe garages but they don't want to spend time laying under the dash of an old car when they can just plug their laptop in a car and fix it for more money!
So I have no choice but try to tackle it myself which seems daunting! I have never ever spliced a wire together in my life on a car.Done sockets at home but never done any car electric!

My plan is to pull the gauge cluster to see how far the wired got burned, change the wires by splicing them with butt connectors and trying to find a pinched wire or a bare wire that got sorted!
Clean the wire connectors at the bulkhead connectors and put some dielectric grease in them! Hopefully the will fix her.
The problem is I can't even put her in the garage because of its awkward position and tiny size!

Once I pulled the gauge cluster will see if the ammeter has been bypassed or not and if not will do it!
I know I need 10 gauge wire for the ammeter bypass but don't know the size for the dash harness!

I'll get the entire dash harness swapped out by a Mopar garage in Austria which is about 150 miles from me.But first I will have to wait for the harness to get here and the shop to have some free time for the Cuda. So I have to mend the car whatever now!

Could anyone tell me the wire gauge I'll be needed for the dash harness and any tips?Bare in my mind I have no idea what I'm looking at when seeing a wiring diagram!

Thank you!

Title: Re: Newbie questions :)
Post by: anlauto on May 09, 2019, 03:38:17 AM
Spen the money and order all new wiring from YearOne  :alan2cents:
Title: Re: Newbie questions :)
Post by: cavemanno1 on May 09, 2019, 04:54:14 AM
I have done that already but I want to get the Cuda driveable again!
The Mopar shop that would do the swap is busy all summer and we want to drive the Cuda!
Title: Re: Newbie questions :)
Post by: anlauto on May 09, 2019, 05:12:54 AM
If you have all new wiring from YearOne it's pretty simple to replace, you can likely do it yourself. (with help from this website of course)

If you've already had issues with wires melting and you want to do a "quick fix" , the next thing burning to the ground will be your entire car  :alan2cents:
Title: Re: Newbie questions :)
Post by: Chryco Psycho on May 09, 2019, 05:33:41 AM
I have time & I have never been to Hungary !!
Title: Re: Newbie questions :)
Post by: Dakota on May 09, 2019, 05:33:59 AM
 :iagree:  I found multiple burn marks from bad wires under my dash, plus the bulkhead connector was melted from over-heating.   While I understand the desire to drive your car now, if you're concerned about your wiring the best choice for the long run is the replace.   I'm fairly certain my car would end up one of those flaming examples Alan is warning you about if I had kept the old wiring harnesses.   The replacement harnesses from Year One are excellent quality and match the original equipment exactly. 
Title: Re: Newbie questions :)
Post by: headejm on May 09, 2019, 08:05:32 AM
 :alan2cents: I wouldn't replace the harness until you found out what was causing the wires to burn. Wiring doesn't just wear out and burn. More than likely the wire(s) that burnt were shorted out by a failed component. Identify the the burnt wires and use the wiring diagrams on this site or the Chrysler service manual to identify what component(s) the wires are attached to. Fix those components, then install new wiring. If the rest of the harness looks good, just replace the burnt wire(s). Use a multimeter to track the wires end-to-end. Not difficult, just time consuming. I would rather repair the wiring than replace it depending on the severity of the damage. I used 16 GA wire for most of my repairs/modifications. Some of the power wires are bigger but 16 GA can take care of most of your issues.
Title: Re: Newbie questions :)
Post by: BIGSHCLUNK on May 09, 2019, 08:41:53 AM
Look at your bulkhead connector you may find some surprises there. ezt megteheted magad   :ohyeah:
Title: Re: Newbie questions :)
Post by: HP2 on May 09, 2019, 10:27:28 AM
The skinny pink wire in the picture looks like the brake light switch wire, but it also runs up the column into the hazard flasher, if I recall correctly. You can start by chasing the wire to verify  it has not been pinched or shorted out by something to generate the damaging heat.
Title: Re: Newbie questions :)
Post by: headejm on May 09, 2019, 10:53:02 AM
The third wire from the right has the insulation melted off of it. On my harness the third wire is blue with a white stripe. Wire number J2A-16DBL* titled Ignition 2.

That wire ties into three other circuits:

1. Pin 23 on the bulkhead connector
2. Key-in buzzer
3. Emergency brake warning light
Title: Re: Newbie questions :)
Post by: cavemanno1 on May 10, 2019, 11:39:42 PM
Thanks guys!
I'm about to tackle it so fingers crossed I won't burn it down!
Title: Re: Newbie questions :)
Post by: cavemanno1 on May 11, 2019, 03:34:01 AM
Now what do I do? :(
Title: Re: Newbie questions :)
Post by: anlauto on May 11, 2019, 05:30:53 AM
If you already have the new wiring, just put it in...why mess with this 50 year old corroded garbage ? :huh:
Title: Re: Newbie questions :)
Post by: cavemanno1 on May 11, 2019, 05:35:09 AM
I don't have it yet!
It's on its way but God knows when it gets here!
It could be next week or next month!
You just never know here because our postal service is let's just say unreliable!
I must get my car off the street!!!
Title: Re: Newbie questions :)
Post by: anlauto on May 11, 2019, 05:41:50 AM
Oh, sorry I misunderstood  :sorry:
Title: Re: Newbie questions :)
Post by: cavemanno1 on May 11, 2019, 05:52:54 AM
That's okay never mind!
This blue and white melted  wire is going to the bulkhead and a to the ignition harness connector!
From the bulkhead it goes into a thicker wire which is black and I think into the ballast resistor!
I cut that black wire at the enginebay bypassing the bulkhead connector and run a wire through the firewall to the emergency flasher.Then splice a wire in for the ignition harness bypassing it!
How can I take the wires out of the connectors?I can't figure it out and don't want to force anything!
Told you i'm a newbie!
Title: Re: Newbie questions :)
Post by: Chryco Psycho on May 11, 2019, 06:07:17 AM
this type of tool work well to get to the tabs that hold the wires into the connectors
https://www.ebay.com/itm/Car-Terminal-Removal-Tool-Wire-Plug-Connector-Extractor-Puller-Release-Pin-26PCS/223494008445?epid=17030720023&hash=item340947ee7d:g:jNgAAOSwKptcdv~y
Title: Re: Newbie questions :)
Post by: cavemanno1 on May 11, 2019, 06:51:53 AM
She starts up but dies after a second!
Starts up fine every time but dies!
Got fuel in carb!I only replaced the burned wires nothing else! :notsure:
Title: Re: Newbie questions :)
Post by: Chryco Psycho on May 11, 2019, 10:02:58 AM
you have 2 wires from the ing switch , blue & brown , brown powers everything in crank position , blue is run , confirm you have power to both wores when in the key is in the correct position
Title: Re: Newbie questions :)
Post by: cavemanno1 on May 11, 2019, 10:39:38 AM
Now it doesn't even start just making a grinding noise  :headbang:
Title: Re: Newbie questions :)
Post by: Chryco Psycho on May 11, 2019, 02:28:25 PM
so the starter is engaging but not working correctly
Title: Re: Newbie questions :)
Post by: cavemanno1 on May 11, 2019, 11:05:08 PM
Yes,but I have not messed with the starter wiring!
It was working fine till I disconnected all my wiring I have done!
I made pull apart connections just in case!
So after checking out why it wouldn't stay running I connected almost everything back up because I forgot to connect the emergency flasher and ignition harness and just the grinding noise!
After connecting now everything just grinding noise again!

What did I screw up?
Title: Re: Newbie questions :)
Post by: 73chalngr on May 12, 2019, 05:04:55 AM
Is your battery weak from all the cranking ? Sometimes you get wrapped up in everything and miss the obvious  .
Title: Re: Newbie questions :)
Post by: cavemanno1 on May 12, 2019, 09:48:20 AM
Wouldn't think so?It's only a year old battery and it should not get weak from cranking it 6-7 times,should it?
Title: Re: Newbie questions :)
Post by: challengermaniac on May 12, 2019, 01:31:25 PM
Not really, although a short could have been draining the battery all along.  Have you completed a Voltage meter check?
Title: Re: Newbie questions :)
Post by: cavemanno1 on May 15, 2019, 04:35:28 AM
No, I haven't and don't even know how to. Plus it's been raining the last 5 days and could not do anything on her!
Wife is pissed off because suddenly everything is breaking on this car  :headbang:

Going to take her to the Mopar garage in Austria and let them fix it before I damage it further.