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  #1  
Old 08-23-2013, 07:07 PM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
Posts: 5,177
W123, Fuse 8 HVAC

I removed the fuse block so I could re wire The HVAC circuit. Part is melted into the fuse block, not allowing a good connection.

None of the wires are showing signs of cracking or melting.

The source is a Red with a yellow stripe. It goes through the fuse, and then to 3 wires, all red with a yellow stripe. Two of the wires are thin, but one is a fat one, even bigger than the source wire.

Is the fatter one for the fan? If it is, then I am going to put it on it's own fuse.

Thanks!

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K
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  #2  
Old 08-23-2013, 11:23 PM
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Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
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Well it looks like looking at my wiring diagram. from fuse F8 16amp

1 RD/YL goes to the compressor relay

2.5 RD/YL goes to the Electronic unit for blower speed control

.75 RD/YL goes to the Pushbutton control assembly

this is from my Electrical Troubleshooting Manual model yr 83 - 85

Charlie
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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Last edited by charmalu; 08-25-2013 at 10:05 PM. Reason: model yr 83 - 85 not 80 - 85
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  #3  
Old 08-25-2013, 03:33 PM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
Posts: 5,177
Thanks Charlie!!!

I am assuming the 2.5 wire is the fat one that goes to the fan circuit. Is that right?
__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K
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  #4  
Old 08-25-2013, 10:35 PM
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Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,652
The 2.5 wire goes to the Blower Speed Control behind the Glove Box. there are two units side by side behind there. It is for the right one that is a black box. the one to the left, a silver box is the "Electronic unit for temperature control".

I assume you to be right that the 2.5 is the fat wire. It doesn`t say in the manual though.


Charlie
__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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  #5  
Old 08-26-2013, 02:12 AM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
Posts: 5,177
Thanks Charlie!!! I think I will relay that circuit and fuse it.

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K
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