no lights


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Post Thu Sep 18, 2014 7:17 am

no lights

I just purchased a 1979 I 2275 and it has no turn signals, brake, or headlights. If I put power to light circuit the lights will work but not by switch. I can't find a wiring diagram for It, they say too old to be in system.
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Golden Jubilee
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Location: Grand Junction, Colorado

Post Thu Sep 18, 2014 8:28 am

Re: no lights

Try taking a look over at our Friend, Irish Mike's library and see if you can find something.
https://app.box.com/shared/otkihx6yoa
If that doesn't help check Binder Books, they offer reprints of the older International manuals. MM
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Golden Jubilee
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Post Fri Sep 19, 2014 12:36 pm

Re: no lights

This would get more replies in the S-series section,maybe CB will see it then(?). He's probably the best here with electrical issues.

There is a folder at GangsterIH with some wiring diagrams for the S-series,it should be helpful?
https://app.box.com/shared/otkihx6yoa/1 ... 71358454/1

It can be downloaded by using the downward arrow in upper right.
12 yrs.exp. in IH dealer parts dept.
Never argue with a fool...
If you don't have anything nice to say...say nothing.
If you don't learn something new everyday...you weren't paying attention.
THINK! Be sure brain is connected before mouth is in gear.

Golden Jubilee
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Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Sat Sep 20, 2014 10:07 am

Re: no lights

I will try and help but have NO experience on the heavy S line. With one execption, I will stay with general guidance.
To my knowledge IHC did not use fuseable links on their heavy trucks. I doubt that it has one or that is your problem. If they did it would be at the starter solenoid main battery feed, but if you lost that, you would have no other power in the truck.
2nd all of the problems you listed have one thing in common: they are all supposed to be fed regardless of the key position.
3rd both the turn signals and brake lights go through the TS switch. There should be a multi plug connector at the base of steering collum.
I would start by traceing back the feed to the stop light and headlight feed.
You can trace from the supply (starter solenoid) or from the switch end and work until you find the break.
Ok I delete some info that isn,t relevant.
on page 11 of the link Scott provided there is a three terminal "feed thru junction block" listed as 'V" on all the drawings, it is on the right hand side of the page. On page 3 it shows to be on the upper left of the firewall. This is where all battery power gets distributed to the different feeds. Wire 50A-14 feeds the headlights, while 14A-10 feed turn and brake (as well as dome and horn). This is where I would start my looking.
I was wrong, there are fuseable links and they are located at the aboved mentioned feed thru stud (V).

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Post Sat Sep 20, 2014 6:56 pm

Re: no lights

Thank You all for the excellent information. Turns out previous owner had a shop install a new starter and didn't rewire it correctly. They had power lead grounded instead a positive terminal. Still trying to get turn signals. I have brake lights but no turn lights. Thanks again for your help.
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Golden Jubilee
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Post Sat Sep 20, 2014 9:18 pm

Re: no lights

It could be the switch,is it all plastic that mounts into the column side? They're a real piece of crap IMO. Sold so many back in the day I remembered the pn.
471302C93 or C94

Found all this...
http://firetrucksandequipment.tpub.com/ ... 4P_239.htm
Scroll down a bit.

https://www.google.com/?gws_rd=ssl#q=471302c94+switch

http://www.ebay.com/sch/sis.html?_nkw=T ... 0990371090

If it is one of those personally I'd see if an old style (better) tried and true switch could be used...
http://www.ebay.com/itm/OEM-NAVISTAR-90 ... 45fce48af5
12 yrs.exp. in IH dealer parts dept.
Never argue with a fool...
If you don't have anything nice to say...say nothing.
If you don't learn something new everyday...you weren't paying attention.
THINK! Be sure brain is connected before mouth is in gear.

Golden Jubilee
Golden Jubilee

Posts: 5170

Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Sun Sep 21, 2014 8:38 am

Re: no lights

Scott,
The 9670 uses a collum similer to the S and school bus chassie. It has a "cut out" for the S type switch but in place of it, uses a Signal-sat type switch. there is a special U shaped bracket to adapt the Signal Stat to the collum. Perhaps it would work in this case? I might have an extra in my box of parts. If I can find it and pass it on to the original poster. Do you have anyway to check that they are the same?
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Golden Jubilee
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Post Mon Sep 22, 2014 5:04 pm

Re: no lights

I can't check much for the heavy S's, I've yet to find a parts manual online I can use. :( I have the MT-140 ('79-'83 1600-2100) DoD version I found at Liberated Manuals. It doesn't list any switch but the integral one.So I'm not even sure if the integral POS was used and the Signal Stat type was optional(?).

Trucklite owns the Signal Stat brand now and still makes the 900 series plus a few others.
http://www.truck-lite.com/webapp/wcs/st ... =/home.jsp
12 yrs.exp. in IH dealer parts dept.
Never argue with a fool...
If you don't have anything nice to say...say nothing.
If you don't learn something new everyday...you weren't paying attention.
THINK! Be sure brain is connected before mouth is in gear.

Golden Jubilee
Golden Jubilee

Posts: 5170

Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Mon Sep 22, 2014 5:19 pm

Re: no lights

s2275 wrote:Thank You all for the excellent information. Turns out previous owner had a shop install a new starter and didn't rewire it correctly. They had power lead grounded instead a positive terminal. Still trying to get turn signals. I have brake lights but no turn lights. Thanks again for your help.

I was able to buy a '69 Fleetstar for $350 for that exact reason... The starter stop working, they put in a new starter and that didn't work so they thought the engine had seized, but it had no power as they had grounded the feed to the rest of the truck! I repaired and drove it as a yard truck and portable compressor until I sold the engine to someone who needed it for what I paid for the whole truck.

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