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Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 2784
Experience:  ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician
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The main light wiring harness was cut just pass the firewall

Customer Question

The main light wiring harness was cut just pass the firewall without the wires being marked and i made a new wiring harness for the lights, turn signals. parking lights and flashers and cant find a schematic so that i know what wire goes to what wire
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Jeremy replied 1 year ago.

My name is ***** ***** I will try to assist you.

Are you trying to go from the DRL module? I will upload all the Freightliner has. They don't have a whole lot for wiring diagrams for this model and year.

Look HERE and HERE and HERE

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Jeremy

Customer: replied 1 year ago.
Theirs 10 wires that come out of the firewall and have only been able to trace and test 6 of them leaving 4 unanswered wires. I have high beams and low beams and parking lights but no turn signals unless I turn the lights out and no flashers
Expert:  Jeremy replied 1 year ago.

Do you know if you have the DRL module in the cab, right hand side, under the fuse box lid, shine with a flashlight and see if you can see a box in there.

Expert:  Jeremy replied 1 year ago.

Those diagrams is all that Freightliner has.

See if there are numbers on those wires and match them to the first pages I provided. They will tell you what the wire goes to.

Expert:  Jeremy replied 1 year ago.

This just put two different responses to different questions together...

On the first pages I provided, there are wiring circuit numbers.

Look on the wirse at the firewall, if any are left, and match the number with the circuit. It should tell you what the wire does.

Expert:  Jeremy replied 1 year ago.

I see you saw my response. I'm just following up to see if you needed more assistance. Thanks.

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