1998 Freightliner Fl70 Fuse Box Diagram

09-18-2017, 09:35 PM

Welcome to iRV2.

Sorry your here with problems .

If you coach is on a Freightliner chassis ( important info to include when posting ) the starter relay could be on plate mounted on the frame rail , behind the RR dual wheels .
Here's a picture and info on 99 Freightliner chassis starter relays.

09-18-2017, 10:34 PM

Quote:

Originally Posted by R Bradley View Post

We have a 1999 National Tradewinds that will not crank. When I turn the key one position, the instrument panel lights up as normal. When I turn further to crank, nothing. Completely dead. We installed two new batteries, still nothing. I checked the starter and the solenoid and both are good. Starter is getting 12 volts. When I check the voltage to the solenoid while trying to crank, 0. I think the starter relay may be bad, but I'm not sure where it's located. I read somewhere that it is under the bed, near the foot, in the motor compartment. However, I do not see anything that looks like a relay. Any help to locate it would be greatly appreciated. A picture of it would be even better. Thanks in advance for any help.

Yep,
It would really help if we knew what make/model/year/engine/chassis etc. that you have, in order to give potentially more accurate answers.
Scott

09-19-2017, 09:10 AM

Quote:

Originally Posted by CountryB View Post

When you turn to key to start and all electrical goes dead - that is also a common symptom when you have a bad or loose battery cable.

This is true but on some vehicles all the warnig lights go out at the strat position and come back onwhen relaesed. A good test for a bad battery conection is to turn the headlights on and then turn the ignition to the start position. If the headlight go out then you eather have a dead battery or a bad connection. The thing involved in this problem are the battery,ign switch,nuetral safety switch,starter relay, starter solenoid and the starter. Most gas MHs have a main power and relay box under the hood.

09-19-2017, 11:41 AM

Quote:

Originally Posted by R Bradley View Post

Sorry, that I left out some information. It is a 99 Freightliner with a 300 HP Caterpillar Turbo diesel engine.

Thanks for posting the chassis info.
I've replaced two starter relays in eight years on my coach , and judging by you description , you'll be replacing your first.

After the second failure , I ran a fused wire from the batteries to a starter push button in the engine bay and down to the starter solenoid ; to by pass the relay; if required. This was after sliding under the coach to jump the starter solenoid to get the coach running to get off a ferry.

BTW. You can set up a signature line ; by clicking " Quick links " under your welcome message, then " Edit signature " type in your coach info and click save signature at the bottom of the page and your coach info will automatically appear below your posts ; as mine does below this one.

09-19-2017, 01:44 PM

Quote:

Originally Posted by R Bradley View Post

Sorry, that I left out some information. It is a 99 Freightliner with a 300 HP Caterpillar Turbo diesel engine.
Also, we had driven to the beach about 9 hours away without any issue. When we got ready to come home, I turned the key several times and it would not crank. After about the fifth or sixth time, it did. We moved the RV to another spot and left for several hours. When we returned, the RV would not crank. We were finally able to jump it off. We did not shut it down on the return home. Because we were able to jump start, I thought it was a battery issue. The batteries were weak and needed to be replaced -- but that didn't cure the problem.
Since we got back home, I have not been able to crank it all, and I have tried numerous times around checking the starter, solenoid and numerous other things (mainly a lot of wires under the dash because a new radio had been installed and we were making sure something didn't get crossed up).

Ok, thanks for adding that info. Now, being that it's a CAT, on a Freightliner chassis, it's potentially possible that your starter relay may, I say MAY, be behind the right side rear duals, next to or on, the outside of the frame. This is just a guess. They are in that particular spot on many CAT equipped Freightliners. They are a bear to get to. I say "they" because there's more than one there. If the pictures post correctly, you'll see what you may, or may not be up against, based on your particular year CAT and chassis. In the first picture, you'll see what I was up against in terms of all those important items related to starting the CAT, and how bad they and all the connections looked.

Then, you'll see what they all looked like when I got done with them.

Another thing to check. Many folks take fair care of the battery cables, AT THE BATTERIES. But, they often neglect the points where the negatives attach to the frames, simply because, they're one of those things, "out of sight, out of mind". I've seen quite a few of those neglected negative battery cable attachments on the frame. Ours, when we first got the coach with 40K on the clock, had some terribly rusty/corroded negative cable attachments on the frame. I removed, cleaned and or replaced what was needed and, ground off the frame where the studs were welded on and, re-attached all of them. There's usually more than one due to the chassis and coach batteries converge there. So, something to look at and think about.
Scott

09-22-2017, 08:34 PM

I'm thinking that jumping the starter post with a screwdriver has taken out a fuse somewhere . With trans warning lights on and no shifting , I'd say you've got either no battery power to the trans controller or no ignition feed.

In past posts involving National on Freightliner , vs, Newmar on Freightliner , I've come to think that there are major differences in the wiring harnesses used between rear rad and side rad Freightliner chassis . Even the original Freightliner manual with my coach has a fuse box diagram that is nothing like the fuse box in my coach .
Long story ; I know ; but had to put the info out there.
Anyhow, if you can check around your engine bay for the modules and the fuse box in the first picture, and take the cover off the one one the right to see if your coach has the engine bay fuses that my coach has.
Now if you can't find a box like this don't be surprised , as in the long story there are different Freightliner harnesses out there.
Call Freightliner for wiring diagrams and schematic linked to your serial number.

09-18-2017, 09:35 PM	#2
Senior Member Join Date: Apr 2011 Location: Powell River, B.C. Posts: 24,909	Welcome to iRV2. Sorry your here with problems . If you coach is on a Freightliner chassis ( important info to include when posting ) the starter relay could be on plate mounted on the frame rail , behind the RR dual wheels . Here's a picture and info on 99 Freightliner chassis starter relays. Attached Thumbnails __________________ 99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060 2000 Caravan toad, Remco & Blue Ox.

09-18-2017, 10:34 PM	#3
Senior Member Join Date: Dec 2009 Location: Out there, somewhere Posts: 9,105	Quote: Originally Posted by R Bradley We have a 1999 National Tradewinds that will not crank. When I turn the key one position, the instrument panel lights up as normal. When I turn further to crank, nothing. Completely dead. We installed two new batteries, still nothing. I checked the starter and the solenoid and both are good. Starter is getting 12 volts. When I check the voltage to the solenoid while trying to crank, 0. I think the starter relay may be bad, but I'm not sure where it's located. I read somewhere that it is under the bed, near the foot, in the motor compartment. However, I do not see anything that looks like a relay. Any help to locate it would be greatly appreciated. A picture of it would be even better. Thanks in advance for any help. Yep, It would really help if we knew what make/model/year/engine/chassis etc. that you have, in order to give potentially more accurate answers. Scott __________________ 2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '18 Honda Africa Twin Adventure Sports DCT Retired-29.5 yrs, SDFD, Ham - KI6OND Me, Karla and the Sophie character, (mini Schnauzer)

09-19-2017, 06:25 AM	#5
Senior Member Workhorse Chassis Owner Join Date: Sep 2007 Location: st.charles mo. Posts: 1,482	You should also look into the huetral saftey switch.

09-19-2017, 07:20 AM	#6
Senior Member Monaco Owners Club Join Date: Aug 2017 Location: Orlando, Florida Posts: 5,759	When you turn to key to start and all electrical goes dead - that is also a common symptom when you have a bad or loose battery cable.

09-19-2017, 09:10 AM	#7
Senior Member Workhorse Chassis Owner Join Date: Sep 2007 Location: st.charles mo. Posts: 1,482	Quote: Originally Posted by CountryB When you turn to key to start and all electrical goes dead - that is also a common symptom when you have a bad or loose battery cable. This is true but on some vehicles all the warnig lights go out at the strat position and come back onwhen relaesed. A good test for a bad battery conection is to turn the headlights on and then turn the ignition to the start position. If the headlight go out then you eather have a dead battery or a bad connection. The thing involved in this problem are the battery,ign switch,nuetral safety switch,starter relay, starter solenoid and the starter. Most gas MHs have a main power and relay box under the hood.

Five Widget 02

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1998 Freightliner Fl70 Fuse Box Diagram

09-19-2017, 11:41 AM	#8
Senior Member Join Date: Apr 2011 Location: Powell River, B.C. Posts: 24,909	Quote: Originally Posted by R Bradley Sorry, that I left out some information. It is a 99 Freightliner with a 300 HP Caterpillar Turbo diesel engine. Thanks for posting the chassis info. I've replaced two starter relays in eight years on my coach , and judging by you description , you'll be replacing your first. After the second failure , I ran a fused wire from the batteries to a starter push button in the engine bay and down to the starter solenoid ; to by pass the relay; if required. This was after sliding under the coach to jump the starter solenoid to get the coach running to get off a ferry. BTW. You can set up a signature line ; by clicking " Quick links " under your welcome message, then " Edit signature " type in your coach info and click save signature at the bottom of the page and your coach info will automatically appear below your posts ; as mine does below this one. __________________ 99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060 2000 Caravan toad, Remco & Blue Ox.

09-19-2017, 01:44 PM	#9
Senior Member Join Date: Dec 2009 Location: Out there, somewhere Posts: 9,105	Quote: Originally Posted by R Bradley Sorry, that I left out some information. It is a 99 Freightliner with a 300 HP Caterpillar Turbo diesel engine. Also, we had driven to the beach about 9 hours away without any issue. When we got ready to come home, I turned the key several times and it would not crank. After about the fifth or sixth time, it did. We moved the RV to another spot and left for several hours. When we returned, the RV would not crank. We were finally able to jump it off. We did not shut it down on the return home. Because we were able to jump start, I thought it was a battery issue. The batteries were weak and needed to be replaced -- but that didn't cure the problem. Since we got back home, I have not been able to crank it all, and I have tried numerous times around checking the starter, solenoid and numerous other things (mainly a lot of wires under the dash because a new radio had been installed and we were making sure something didn't get crossed up). Ok, thanks for adding that info. Now, being that it's a CAT, on a Freightliner chassis, it's potentially possible that your starter relay may, I say MAY, be behind the right side rear duals, next to or on, the outside of the frame. This is just a guess. They are in that particular spot on many CAT equipped Freightliners. They are a bear to get to. I say "they" because there's more than one there. If the pictures post correctly, you'll see what you may, or may not be up against, based on your particular year CAT and chassis. In the first picture, you'll see what I was up against in terms of all those important items related to starting the CAT, and how bad they and all the connections looked. Then, you'll see what they all looked like when I got done with them. Another thing to check. Many folks take fair care of the battery cables, AT THE BATTERIES. But, they often neglect the points where the negatives attach to the frames, simply because, they're one of those things, "out of sight, out of mind". I've seen quite a few of those neglected negative battery cable attachments on the frame. Ours, when we first got the coach with 40K on the clock, had some terribly rusty/corroded negative cable attachments on the frame. I removed, cleaned and or replaced what was needed and, ground off the frame where the studs were welded on and, re-attached all of them. There's usually more than one due to the chassis and coach batteries converge there. So, something to look at and think about. Scott Attached Images __________________ 2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '18 Honda Africa Twin Adventure Sports DCT Retired-29.5 yrs, SDFD, Ham - KI6OND Me, Karla and the Sophie character, (mini Schnauzer)

09-22-2017, 08:34 PM	#12
Senior Member Join Date: Apr 2011 Location: Powell River, B.C. Posts: 24,909	I'm thinking that jumping the starter post with a screwdriver has taken out a fuse somewhere . With trans warning lights on and no shifting , I'd say you've got either no battery power to the trans controller or no ignition feed. In past posts involving National on Freightliner , vs, Newmar on Freightliner , I've come to think that there are major differences in the wiring harnesses used between rear rad and side rad Freightliner chassis . Even the original Freightliner manual with my coach has a fuse box diagram that is nothing like the fuse box in my coach . Long story ; I know ; but had to put the info out there. Anyhow, if you can check around your engine bay for the modules and the fuse box in the first picture, and take the cover off the one one the right to see if your coach has the engine bay fuses that my coach has. Now if you can't find a box like this don't be surprised , as in the long story there are different Freightliner harnesses out there. Call Freightliner for wiring diagrams and schematic linked to your serial number. Attached Thumbnails __________________ 99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060 2000 Caravan toad, Remco & Blue Ox.

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