Notices
1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

Wiring Woes

Thread Tools
 
Search this Thread
 
Old Sep 4, 2016 | 10:54 PM
  #1  
Big_Texxan's Avatar
Big_Texxan
Thread Starter
|
Posting Guru
Joined: Aug 2015
Posts: 1,164
Likes: 5
From: boonies texas
Wiring Woes

Im hoping someone can point me to a wiring diagram for a 66' F100.

I have no front right hazard light, test light confirmed at the plug.

I also had no brake lights, switch was good (ohm meter confirmed) so I ran a temporary fused Hot wire to make it legal, OE wire does nothing and has no power.

I have no turn signals, and test light cannot confirm a ignition hot wire to power these. I was told turn signal switch powers brake switch, but having no ignition power concerns me. I suspect ignition switch, but truck starts and runs just fine.

I have tried to trace wires around, but PO or original owner added about a billion scotch locks and powered many different things. They had a radio, CB radio, and a bunch of other nonsense that isnt there any more and I ripped out the excess they forgot to take out when those items they had left.

Reason I found this out, is I added gauges for my truck to check on the 351 swap, and I could not find a hot wire to save my life and Ive been doing cars for years. So a little help would be appreciated since google cant tell me the right diagram unless other years work. Original wiring is all good except for the rear harness for tails and stuff, and Ill redo all that, but I ran a switch and some temporary saves to get the truck legal.
 
Reply
Old Sep 5, 2016 | 08:09 AM
  #2  
yankbs 66f100's Avatar
yankbs 66f100
Elder User
Joined: Apr 2014
Posts: 505
Likes: 0
From: Cumming, Ga.
Jacob, I hope this helps. If not, I have several other pages available. Bob
 
Reply
Old Sep 5, 2016 | 08:22 AM
  #3  
robertrpeak's Avatar
robertrpeak
Tuned
5 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2016
Posts: 469
Likes: 60
From: TN.
Hey Bob, hows thing there in Cumming? Moved from there in 06. Gotta lot of hot rod buddies down there....haven't been in several years..guess I need to plan a road trip south...

Robert
 
Reply
Old Sep 5, 2016 | 09:54 AM
  #4  
daveengelson's Avatar
daveengelson
Lead Driver
20 Year Member
Photogenic
Joined: Aug 2003
Posts: 6,305
Likes: 18
From: Boulder Creek, Ca
Club FTE Gold Member
Probly just a repeat of what U have already confirmed: found isolating the individual harnesses work best for me; disconnected truck battery then used a flashlight sized 6 volt battery, along with alligator clips, disconnected taillight harness, ran clips from appropriate side of small battery to individual taillight wires to verify if the circuit worked; if faulty, suggest include removing bulb and check condition of the bulb socket and contact points. Same with circuit from brake sending unit to the 5-6 pin connector at the steering column. With a helper process should only take less than 1/2 hour, I was the helper so it took close to an hour. Hopefully the problem has been resolved and do not have to remove the steering wheel, which would only take less than 5 min's with the correct steering wheel puller. I followed the diagram 'yankbs' posted. Then there's the turn, and stop light fuse??
 
Reply
Old Sep 6, 2016 | 02:45 PM
  #5  
Big_Texxan's Avatar
Big_Texxan
Thread Starter
|
Posting Guru
Joined: Aug 2015
Posts: 1,164
Likes: 5
From: boonies texas
Originally Posted by yankbs 66f100
Jacob, I hope this helps. If not, I have several other pages available. Bob
Thanks Bob. I didnt know you were in cumming. **** I live in Buford man.

Originally Posted by daveengelson
Probly just a repeat of what U have already confirmed: found isolating the individual harnesses work best for me; disconnected truck battery then used a flashlight sized 6 volt battery, along with alligator clips, disconnected taillight harness, ran clips from appropriate side of small battery to individual taillight wires to verify if the circuit worked; if faulty, suggest include removing bulb and check condition of the bulb socket and contact points. Same with circuit from brake sending unit to the 5-6 pin connector at the steering column. With a helper process should only take less than 1/2 hour, I was the helper so it took close to an hour. Hopefully the problem has been resolved and do not have to remove the steering wheel, which would only take less than 5 min's with the correct steering wheel puller. I followed the diagram 'yankbs' posted. Then there's the turn, and stop light fuse??
Yeah I figured I just wanted to confirm. I work on new cars all day and have to get back into my mindset of "its an older car". I know the socket is good, I just need to trace the wires on the diagram now and see about a break using my ohm meter and such. This is much more fun than a computer telling me whats wrong.
 
Reply
Old Sep 6, 2016 | 07:45 PM
  #6  
yankbs 66f100's Avatar
yankbs 66f100
Elder User
Joined: Apr 2014
Posts: 505
Likes: 0
From: Cumming, Ga.
[QUOTE=Big_Texxan;16553384]Thanks Bob. I didnt know you were in cumming. **** I live in Buford man.

I know we're less than 10 miles apart. I could have brought copies over to you if you wanted.. The bed looks good, but was a little worried when the email notification said you had wood. Then I remembered you talking about putting the flooring in the bed.

It looks like you're ready to head to Texas, do you have a time frame set yet?
 
Reply
Old Sep 6, 2016 | 08:06 PM
  #7  
Big_Texxan's Avatar
Big_Texxan
Thread Starter
|
Posting Guru
Joined: Aug 2015
Posts: 1,164
Likes: 5
From: boonies texas
[QUOTE=yankbs 66f100;16554004]
Originally Posted by Big_Texxan
Thanks Bob. I didnt know you were in cumming. **** I live in Buford man.

I know we're less than 10 miles apart. I could have brought copies over to you if you wanted.. The bed looks good, but was a little worried when the email notification said you had wood. Then I remembered you talking about putting the flooring in the bed.

It looks like you're ready to head to Texas, do you have a time frame set yet?
HAHAHAH that was the point of the title!

I leave on Friday. Finish the body of the Ford tomorrow for assembly and travel. Pack, and pick up the truck and trailer Thursday and load it down
 
Reply
Old Sep 7, 2016 | 10:26 AM
  #8  
KO1960's Avatar
KO1960
Laughing Gas
15 Year Member
Joined: Jul 2010
Posts: 1,113
Likes: 113
From: Chico, Ca.
Keep in mind that there is no ground wire for the tailights. The ground is completed by contact with the tailight to the body. Make sure the surfaces are clean. I used some bulb grease at the contact point.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-1

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-2

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-3

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-4

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-5

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-6

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
story-7

Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

 Joe Kucinski
story-8

Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

 Michael S. Palmer
story-9

The Best F-150 Deal of Every Trim Level (XL through Raptor)

 Joe Kucinski
Old Sep 7, 2016 | 04:32 PM
  #9  
Big_Texxan's Avatar
Big_Texxan
Thread Starter
|
Posting Guru
Joined: Aug 2015
Posts: 1,164
Likes: 5
From: boonies texas
Originally Posted by KO1960
Keep in mind that there is no ground wire for the tailights. The ground is completed by contact with the tailight to the body. Make sure the surfaces are clean. I used some bulb grease at the contact point.
Oh yeah, already done.
 
Reply
Old Sep 7, 2016 | 04:38 PM
  #10  
Big_Texxan's Avatar
Big_Texxan
Thread Starter
|
Posting Guru
Joined: Aug 2015
Posts: 1,164
Likes: 5
From: boonies texas
Its not the prettiest having the wires just there, but I already went ahead and added a trailer wiring harness, so i could run these lights temporarily.

 
Reply
Old Sep 7, 2016 | 04:39 PM
  #11  
Big_Texxan's Avatar
Big_Texxan
Thread Starter
|
Posting Guru
Joined: Aug 2015
Posts: 1,164
Likes: 5
From: boonies texas
Question since you guys are active, I have LEDs in the front, and I will be running LEDs in the rear, along with everything inside the truck being LED as well. I could not find any specific topic about this, but what are the chances of everything operating normally?
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
skucera
1987 - 1996 F150 & Larger F-Series Trucks
18
Aug 13, 2023 07:35 PM
TexasDude
1957 - 1960 F100 & Larger F-Series Trucks
4
Sep 26, 2016 03:03 PM
555 Studio
Electrical Systems/Wiring
8
Feb 8, 2016 07:02 PM
bcsawyer
Large Truck
3
Apr 17, 2011 10:03 PM
Robopig
1967 - 1972 F-100 & Larger F-Series Trucks
4
Jun 27, 2003 02:10 PM




All times are GMT -5. The time now is 11:56 PM.

story-0
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-1
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-2
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-3
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-4
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-5
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-6
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE