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Author Topic: Dash Wiring Harness Issue  (Read 399 times)
Christianlondon
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« on: April 01, 2022, 04:51:34 PM »

I am having my Car restored and the shop was fitting the under Dash Harness today.They said that there was a problem. The harness didn't have the wiring for the heater or a front light section..Does it have add on harness sections that I have to buy to run to the heater and the Headlights?
I supplied the shop with the Engine wiring harness too so I thought they had everything required  Roll Eyes
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70 sublime
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« Reply #1 on: April 01, 2022, 07:15:46 PM »

If we are talking about a second generation Charger there are 3 wiring harness sections under the hood that plug into the master firewall block

If it is a 68 or 69 the light harness wires will also have the vaccum hoses wrapped in it for the head light doors
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Christianlondon
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« Reply #2 on: April 02, 2022, 02:35:31 AM »

I bought the 1969 Mopar B-Body Under-Dash Wire Harness with Oil Gauge Provision from Classic Industries .I got this and the engine Harness.I also got the electric Actuator kit for the lights..The guy doing the car seems to think that you plug in additional wiring looms to the under Dash one to work the heater and front lights ?
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70 sublime
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« Reply #3 on: April 02, 2022, 05:43:20 AM »

Sorry I have never used a harness from classic just original factory stuff

The heater wires may be a differnt section because it could be for heat or AC set up but every car will come with head lights and would think the wires should be there under the dash
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Christianlondon
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« Reply #4 on: April 02, 2022, 09:19:21 AM »

I'm guessing it may need  one of the harnesses in the picture then.I'm not sure if I will need the forward Lamp harness as well?


* Screenshot_2022-04-02-15-55-37-1.png (398.21 KB, 959x685 - viewed 125 times.)
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JimShine
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« Reply #5 on: April 04, 2022, 11:25:26 AM »

Yes, the core dash wiring kit will not cover everything. They made them like the factory harnesses where there is a core harness that has add on accessory harnesses that plug in for various other circuits. That harness ends at the bulkhead connector on the firewall and a pigtail for the rear. Everything beyond those two points in the engine bay and rear has its own separate harness you need to buy. I think often folks reuse many of the accessories circuits as they usually hold up, as long as they are not exposed to the elements. If yours are bad or you don't have them, you are going to need to see what options your car had and find the required accessories circuits to get it wired up. Another one I can think of is if you have a console, there is a whole accessories harness that goes to that.
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70gtx440dana
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« Reply #6 on: May 17, 2022, 12:52:50 PM »

I'm guessing it may need  one of the harnesses in the picture then.I'm not sure if I will need the forward Lamp harness as well?

This harness is only needed if you have A/C. Non A/C car has all wiring required in main dash harness and heater control unit.
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