1989 Western star wiring problem

89'4964F · 10-07-2011, 12:25 AM

Hello guys, my first post here, great sight. Posted this on the rebuilt forum, but maybe I will get some more looks here.
I am having a hard time finding a wiring diagram and parts for my newly acquired 89 4964F Western star.
Anyone have a schematic or know of aftermarket suppliers for a wiring harness for this rig? The right side has very dim lights and marker lights turn on off. Truck is pretty solid mechanically but, the previous owner really worked the wiring in the dash over good and not quite sure where to start(lots of electrical tape and wire twisted together.
Hopefully someone here can help or I guess the ol rig will move on.

It has a 425 cat and 13sp w/ 355 gears.

Thanks for any info.

perrykit · 10-08-2011, 02:20 AM

dim lights are a poor ground problem. its grounded to the radaitor

379Longhood · 10-08-2011, 02:58 AM

I have a wiring manual for an '88 4964, You can have it if you pay the shipping.

89'4964F · 10-08-2011, 01:10 PM

Thanks for the info guys will rework the grounds today.

Longhood, I will send you a pm/email for details.

89'4964F · 10-08-2011, 01:16 PM

Now a new problem. Truck doesn't want to shift into gear from neutral and doesnt want to come our either. Trk jumps when put into gear.
Could these dual disk clutches be seized together?

The truck sat for quite some time and didn't have this problem when we parked it.
I know my way around diesels but these large trucks I am definitely a novice and advice on this would be great.

Thanks again to for you guys helping me out. Truck needs to be road ready next thursday to haul hay home here. Its awful dry.

ledbetter · 01-28-2012, 04:24 PM

I have an 88 4964 doing just about the same things, cant find a wiring diagram anywhere and all the wires under the dash are white. that makes it a nightmare to trace wires. If you still have the wiring diagram I would be interested.

bmoeller · 01-28-2012, 09:33 PM

With road salt, I'd check all the connections, on and to, the affected lights. The terminals on the wires for the postive lead wire can get severely corroded as well. Had to replace some pins on some of my weatherpack connectors on my KW last week.

bmoeller · 01-28-2012, 09:34 PM

On the clutch-

Discs could be stuck to the pressure plate or flywheel, or that the pilot bearing could be seized and stuck to the input shaft.

AaronF · 01-28-2012, 11:42 PM

Clutch-

Or the roll pins in the intermediate plate may be seized and not allowing the discs to move the amount that they need to four the clutch to fully disengage.

379Longhood · 01-29-2012, 12:59 AM

Quote:

Originally Posted by ledbetter

I have an 88 4964 doing just about the same things, cant find a wiring diagram anywhere and all the wires under the dash are white. that makes it a nightmare to trace wires. If you still have the wiring diagram I would be interested.

I still have the manual, what section are you looking for?

10-07-2011, 12:25 AM	#1
89'4964F Junior Member Join Date: Oct 2011 Location: kansas city Posts: 4 Points: 345 Thanks: 0 Thanked 0 Times in 0 Posts	1989 Western star wiring problem Hello guys, my first post here, great sight. Posted this on the rebuilt forum, but maybe I will get some more looks here. I am having a hard time finding a wiring diagram and parts for my newly acquired 89 4964F Western star. Anyone have a schematic or know of aftermarket suppliers for a wiring harness for this rig? The right side has very dim lights and marker lights turn on off. Truck is pretty solid mechanically but, the previous owner really worked the wiring in the dash over good and not quite sure where to start(lots of electrical tape and wire twisted together. Hopefully someone here can help or I guess the ol rig will move on. It has a 425 cat and 13sp w/ 355 gears. Thanks for any info.

10-08-2011, 02:58 AM	#3
379Longhood Senior Member Join Date: Oct 2009 Location: Alberta t0m0r0 Posts: 2,008 Points: 36,583 Thanks: 146 Thanked 381 Times in 306 Posts	I have a wiring manual for an '88 4964, You can have it if you pay the shipping. __________________ Canadian Club member 27 '88 379 exhd 3406C 15 40s 10 pete unimounts '93 K3500 6.5 4L80 4" exh '62 gmc shortbox 454 super t10 big brakes JD 820 black dash 12V92 waitin' for a truck (mega ratrod) pettibone s20 3306 pc

01-28-2012, 04:24 PM	#6
ledbetter Junior Member Join Date: Jan 2012 Posts: 1 Points: 214 Thanks: 0 Thanked 0 Times in 0 Posts	88 4964 wiring problem I have an 88 4964 doing just about the same things, cant find a wiring diagram anywhere and all the wires under the dash are white. that makes it a nightmare to trace wires. If you still have the wiring diagram I would be interested.

01-28-2012, 09:33 PM	#7
bmoeller Senior Member Join Date: Dec 2008 Location: NW IL Posts: 4,545 Points: 33,378 Thanks: 132 Thanked 310 Times in 264 Posts	With road salt, I'd check all the connections, on and to, the affected lights. The terminals on the wires for the postive lead wire can get severely corroded as well. Had to replace some pins on some of my weatherpack connectors on my KW last week. __________________ "Some people are educated beyond their intelligence." '93 W350 CC, LE, 5spd, HTT modded H1C, 4" DE Sold- '99 3500 Q/C, SO CTD, 4x4, 5spd. Traded off- '97 3500 C/C, 4x4, CTD '92 W250, LE, CC, CTD w/ tweaked pump (SOLD) "Obama = Hoax and Chains" If Obama is the answer, it must have been a stupid question.

01-28-2012, 09:34 PM	#8
bmoeller Senior Member Join Date: Dec 2008 Location: NW IL Posts: 4,545 Points: 33,378 Thanks: 132 Thanked 310 Times in 264 Posts	On the clutch- Discs could be stuck to the pressure plate or flywheel, or that the pilot bearing could be seized and stuck to the input shaft. __________________ "Some people are educated beyond their intelligence." '93 W350 CC, LE, 5spd, HTT modded H1C, 4" DE Sold- '99 3500 Q/C, SO CTD, 4x4, 5spd. Traded off- '97 3500 C/C, 4x4, CTD '92 W250, LE, CC, CTD w/ tweaked pump (SOLD) "Obama = Hoax and Chains" If Obama is the answer, it must have been a stupid question.

10-08-2011, 02:20 AM	#2
perrykit Junior Member Join Date: Jun 2011 Location: beaumont ms. Posts: 44 Points: 9,158 Thanks: 10 Thanked 3 Times in 3 Posts	dim lights are a poor ground problem. its grounded to the radaitor

10-08-2011, 01:10 PM	#4
89'4964F Junior Member Threadstarter Join Date: Oct 2011 Location: kansas city Posts: 4 Points: 345 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks for the info guys will rework the grounds today. Longhood, I will send you a pm/email for details.

10-08-2011, 01:16 PM	#5
89'4964F Junior Member Threadstarter Join Date: Oct 2011 Location: kansas city Posts: 4 Points: 345 Thanks: 0 Thanked 0 Times in 0 Posts	Now a new problem. Truck doesn't want to shift into gear from neutral and doesnt want to come our either. Trk jumps when put into gear. Could these dual disk clutches be seized together? The truck sat for quite some time and didn't have this problem when we parked it. I know my way around diesels but these large trucks I am definitely a novice and advice on this would be great. Thanks again to for you guys helping me out. Truck needs to be road ready next thursday to haul hay home here. Its awful dry.

01-28-2012, 11:42 PM	#9
AaronF Junior Member Join Date: Feb 2011 Location: Hartford, Maine Posts: 691 Points: 27,611 Thanks: 158 Thanked 126 Times in 104 Posts	Clutch- Or the roll pins in the intermediate plate may be seized and not allowing the discs to move the amount that they need to four the clutch to fully disengage. __________________ Aaron - 1986 Ford LTL9000 - 3406 B/C/E

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