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post #1 of 25 (permalink) Old Aug 9th, 14, 08:15 PM Thread Starter
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thefley
 
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wiring help needed.

I am in the finishing stages of new Dakota Digital gauges, and Classic Air install. Actually those are done and I started car to check if they were working and they did.

NOW I just installed a new wiring harness and Detroit Speed RS grill kit, but now when I go to start it I have no power...

I believe I wired it just like the old harness but now I have no power when I turn key, no lights nothing. I tested battery and even jumped it but nothing. I would expect to have some power at least.

I replaced the drivers side harness only and from the firewall forward. Could this cause total loss of power to car? The small relay on the driver's side up behind head light are that is wired up to harness could this be wired wrong and cause it?

PLEASE. All and any suggestions welcome As I am at a loss here..

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post #2 of 25 (permalink) Old Aug 9th, 14, 08:31 PM
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Re: wiring help needed.

There's a junction block right near the battery on the core support that the smaller positive battery cable connects to the wiring harness. Check to see if that is connected.
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post #3 of 25 (permalink) Old Aug 9th, 14, 08:36 PM
 
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Re: wiring help needed.

You need to identify your hot line from the battery to your electric junction on firewall, then from there to the ignition switch. Is it completely dead? or just the ignition? I'm sure you've checked your wires to make sure they are all connected. You might reference a schematic of wiring to aid in your wire trace. I have had this same upgrade done within the last 2 months. (Vintage Air and RS conversion using electric motors instead of vacuum canisters on headlight doors). Much tracing with an circuit tester got things sorted out.
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post #4 of 25 (permalink) Old Aug 9th, 14, 08:54 PM Thread Starter
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Re: wiring help needed.

Quote:
Originally Posted by slazisme View Post
There's a junction block right near the battery on the core support that the smaller positive battery cable connects to the wiring harness. Check to see if that is connected.
Got any pics of this for me? That does reminds me that I did replace the battery terminals and the positive had a small red wire built into the old terminal and I forgot where it went and forgot to replace it. It had a black plastic thing on other end that appears to have pulled loose from something. ... is this what you could be referring to on firewall?.. I have the MSD
Ignition wired up or is this something different?

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post #5 of 25 (permalink) Old Aug 9th, 14, 09:38 PM
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Re: wiring help needed.

This diagram might help you. Follow red wire from + side of battery.

Last edited by Cdminter55; Aug 9th, 14 at 10:20 PM.
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post #6 of 25 (permalink) Old Aug 9th, 14, 09:52 PM
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Re: wiring help needed.

yes on the drivers side of your radiator support just below the voltage reg there is the turn signal relay, power goes through it and if it is not wire correctly you well not have power
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post #7 of 25 (permalink) Old Aug 9th, 14, 10:06 PM
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Re: wiring help needed.

Quote:
Originally Posted by LITTLE TOMMIE View Post
yes on the drivers side of your radiator support just below the voltage reg there is the turn signal relay, power goes through it and if it is not wire correctly you well not have power
I believe you are talking about the horn relay and buss

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post #8 of 25 (permalink) Old Aug 9th, 14, 10:46 PM
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Re: wiring help needed.

Sorry I tried to send an attachment before with a wiring diagram in the post. I hope it works this time. Follow the + wire from the battery to the junction box. That wire then goes to the horn relay.

Last edited by Cdminter55; Aug 9th, 14 at 10:59 PM.
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post #9 of 25 (permalink) Old Aug 9th, 14, 10:56 PM
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Re: wiring help needed.

yes, i'm sorry , the horn relay
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post #10 of 25 (permalink) Old Aug 9th, 14, 11:18 PM
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Re: wiring help needed.

I am confused as I have sent attachments in two different post. It showed the name of the attachment below in attached files. When I go back to the post later it is gone ???
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post #11 of 25 (permalink) Old Aug 10th, 14, 05:57 AM
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Re: wiring help needed.

Quote:
Originally Posted by Cdminter55 View Post
Sorry I tried to send an attachment before with a wiring diagram in the post. I hope it works this time. Follow the + wire from the battery to the junction box. That wire then goes to the horn relay.
There is no junction box. 12v from batt to junction block. It's just a plastic piece with a threaded stud and nut attached to the radiator support between the battery tray and the radiator.

From there to horn relay buss. Buss to firewall connector

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post #12 of 25 (permalink) Old Aug 10th, 14, 06:01 AM
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Re: wiring help needed.

Quote:
Originally Posted by Cdminter55 View Post
I am confused as I have sent attachments in two different post. It showed the name of the attachment below in attached files. When I go back to the post later it is gone ???
What was the file type? PDF's tend to take a long time to spool up from your hard drive lately.
Attached Files
File Type: pdf bulkhead_connector.unlocked.pdf (24.1 KB, 49 views)
File Type: pdf Charging System.pdf (30.2 KB, 38 views)
File Type: pdf head_park_tail_lights.unlocked.pdf (46.0 KB, 39 views)


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post #13 of 25 (permalink) Old Aug 10th, 14, 06:40 AM Thread Starter
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Re: wiring help needed.

This is the relay I speak of, the red wire that came from + side of battery terminal would it go to thus? It is the only wireIi can not account for. Would this keep me from getting any power to switch when I try and start it?




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post #14 of 25 (permalink) Old Aug 10th, 14, 06:51 AM
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Re: wiring help needed.

Quote:
Originally Posted by thefley View Post
This is the relay I speak of, the red wire that came from + side of battery terminal would it go to thus? It is the only wireIi can not account for. Would this keep me from getting any power to switch when I try and start it?



Test to see if you have 12v at the buss on the horn relay. If not then that's the issue.

All power for the car comes off that connection.

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post #15 of 25 (permalink) Old Aug 10th, 14, 11:52 AM Thread Starter
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Re: wiring help needed.

What relay do I have in my hand? Some say there are 2 relays and one is a horn relay. I only have one relay here at this location

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