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 Post subject: AC/HEATER rehook up
PostPosted: Sun Jun 20, 2021 5:42 pm 
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2 BBL ''SuperSix''

Joined: Fri Nov 29, 2019 4:15 am
Posts: 20
Car Model: 86 dodge d100
Hello all,

I have any 86 Dodge D100 with a slant six that i believe to originally have ac (someone replaced the motor with a 76 model) and i am trying to convert it back to ac (VA summer/fall is brutal sometimes). I was looking in my factory service manual (86 dodge truck repair manual) and couldnt find any wiring diagram in it that matches what the current set up is for this ac/heater. The heater box appears to be just that with a separate ac evap unit. The manual only shows a heater box with the ac/heater as one box. The factory cut out in the fire wall for the ac hook up looks to be original so does the separate evap unit (there are no duct connections going into the separate heater box.
I cant figure out what that relay is behind the dash vents (nothing in the manual about it), along with the blue box and the white one attached to the dash itself (see pics) i know the one to the far right of the relay (i assume it is a relay) is the blower motor resistor.
Also in the one pic there are 3 wires coming from the ac blower motor that were just cut and not going anywhere along with that big pig tail you see dangling. Does anyone have a pic or diagram on how that is connected? Additionally i cant say i ever seen that ac/heater control unit in the pic and when i search for it nothing comes up?


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 Post subject: Re: AC/HEATER rehook up
PostPosted: Sun Jun 20, 2021 5:44 pm 
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2 BBL ''SuperSix''

Joined: Fri Nov 29, 2019 4:15 am
Posts: 20
Car Model: 86 dodge d100
(back of the ac/heater control)


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 Post subject: Re: AC/HEATER rehook up
PostPosted: Mon Jun 21, 2021 5:29 am 
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Turbo EFI
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Joined: Wed Oct 12, 2005 9:00 pm
Posts: 2147
Location: kankakee IL
Car Model: 80 volare, 78 fury 2 dr, 85 D150
Looks just like what was on my 83.
"Dealer add on" unit.
Belt catalogs used to ask if you had factory air or dealer air, yours would be dealer air.


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 Post subject: Re: AC/HEATER rehook up
PostPosted: Mon Jun 21, 2021 7:35 am 
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SL6 Racer & Moderator
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Joined: Sat Oct 19, 2002 12:06 pm
Posts: 7639
Location: Silver Springs, Fl.
Car Model:
Could allso be aftermarket add on air. I have done sevsral of those installs over the years.
I should still have some install instructions someware. give me a couple of days, and if you still need info, send me a pm

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 225 nitrous
64 Valiant Signet
64 Valiant 4dr 170


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 Post subject: Re: AC/HEATER rehook up
PostPosted: Mon Jun 21, 2021 5:05 pm 
Offline
2 BBL ''SuperSix''

Joined: Fri Nov 29, 2019 4:15 am
Posts: 20
Car Model: 86 dodge d100
volaredon wrote:
Looks just like what was on my 83.
"Dealer add on" unit.
Belt catalogs used to ask if you had factory air or dealer air, yours would be dealer air.

Ah that would make sense cause my factory manual didnt even have a wire diagram for it lol. My duster was a VA car originally too and it had "dealer" add on air conditioning.


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 Post subject: Re: AC/HEATER rehook up
PostPosted: Mon Jun 21, 2021 5:06 pm 
Offline
2 BBL ''SuperSix''

Joined: Fri Nov 29, 2019 4:15 am
Posts: 20
Car Model: 86 dodge d100
Charrlie_S wrote:
Could allso be aftermarket add on air. I have done sevsral of those installs over the years.
I should still have some install instructions someware. give me a couple of days, and if you still need info, send me a pm

If you do that would be great


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 Post subject: Re: AC/HEATER rehook up
PostPosted: Mon Jun 21, 2021 5:52 pm 
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SL6 Racer & Moderator
User avatar

Joined: Sat Oct 19, 2002 12:06 pm
Posts: 7639
Location: Silver Springs, Fl.
Car Model:
86d100 wrote:
Charrlie_S wrote:
Could allso be aftermarket add on air. I have done sevsral of those installs over the years.
I should still have some install instructions someware. give me a couple of days, and if you still need info, send me a pm

If you do that would be great

See if you can find any tags or sitckers that might say "Wynns", "ARA" , "FRigette", any thing like that. They were three of sveral companies that made units for Mopar trucks.
PS: That green box is an electronic thermostat

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 225 nitrous
64 Valiant Signet
64 Valiant 4dr 170


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 Post subject: Re: AC/HEATER rehook up
PostPosted: Wed Jun 23, 2021 1:35 pm 
Offline
2 BBL ''SuperSix''

Joined: Fri Nov 29, 2019 4:15 am
Posts: 20
Car Model: 86 dodge d100
Charrlie_S wrote:
86d100 wrote:
Charrlie_S wrote:
Could allso be aftermarket add on air. I have done sevsral of those installs over the years.
I should still have some install instructions someware. give me a couple of days, and if you still need info, send me a pm

If you do that would be great

See if you can find any tags or sitckers that might say "Wynns", "ARA" , "FRigette", any thing like that. They were three of sveral companies that made units for Mopar trucks.
PS: That green box is an electronic thermostat


Oh wow i would have never guessed that box was a electronic thermostat. I did find this sticker on the evap unit itself


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 Post subject: Re: AC/HEATER rehook up
PostPosted: Wed Jun 23, 2021 2:32 pm 
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SL6 Racer & Moderator
User avatar

Joined: Sat Oct 19, 2002 12:06 pm
Posts: 7639
Location: Silver Springs, Fl.
Car Model:
Yep, that is an aftermarket A/C kit. I know of them, but don't think I have any literature for their units. I'll take a look. Actually most of them used very similar wiring.
On that blue box (just going by failing memory) two wires go to a thermister in the evaporator. two wires went to a variable resistor connected to the temp control (either on the control head, or the lever on the evap case). One wire for +12volt, one wire for ground, and one wire to the compressor clutch.

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 225 nitrous
64 Valiant Signet
64 Valiant 4dr 170


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 Post subject: Re: AC/HEATER rehook up
PostPosted: Fri Jun 25, 2021 2:02 pm 
Offline
2 BBL ''SuperSix''

Joined: Fri Nov 29, 2019 4:15 am
Posts: 20
Car Model: 86 dodge d100
Charrlie_S wrote:
Yep, that is an aftermarket A/C kit. I know of them, but don't think I have any literature for their units. I'll take a look. Actually most of them used very similar wiring.
On that blue box (just going by failing memory) two wires go to a thermister in the evaporator. two wires went to a variable resistor connected to the temp control (either on the control head, or the lever on the evap case). One wire for +12volt, one wire for ground, and one wire to the compressor clutch.


Well I'll be dipped didnt even know they did that. I do see the 2 wires coming out from the evap core (no connector for it) and the resistor (looks like a relay) up on the fire wall. I'll have to play around with it. Thanks for the info


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