Headlight harness ground

[tboneshep]

Ok, so I grounded the wire that was in question to the radiator frame and now I have the drivers side parking light, turn signal, flasher, and headlight. I now have a similiar problem with the passenger side, it has the 68 harness. Different male pigtail, couldn't finish tonight as the heavy rain came in combined with thunder and darkness. Will press on when it's dry, with more questions. Thanks.

Note: I observed when the drivers side parking light/turn signal did not work, that the inside dashboard panel displayed a solid light for the turn signal, for the passenger side, there is no signal at all inside the dash. I changed to the original flasher, and checked the fuse. Does this behavior indicate a different type of problem? Still have one more wire to check tonight.

[tboneshep]

The 68 passenger side turn signal harness has a two prong connector from the main harness, and a single male connector that is black, so I grounded it to the frame like the drivers side, but still no signal. Dash shows no passenger side flash, no rear flash eithern now no horn. Checked the parking light bucket with a light tester and it is getting no power. Does the dash not indicating a right turn signal also indicate a problem?

The 68 passenger side healdlight harness had a single female black connector that I have not connected, but the headlight works. At one point I connected the turn signal amle to the headlight female, but still no turn signal. Where to next??

[Tim P.]

you need a seperate ground for the running/turn it sounds like or a ground to the grill from a ground on rad support

[Thunderfoot]

Does the right front marker/park light work and the turn signal doesn't? Or both don't work...

That single wire off the headlight connector does go to the single wire on the turn signal for ground see the attachment wire (57A)...

Getting no power there is a problem alright... Check the connector at the column that you changed over, look at the wires 49/2 in this drawing they are for the front right turn signal... I also marked the one for the Horn - This wire for the horn is a ground wire for the Horn relay, when you hit the Horn it completes the ground connection to activate the Horn relay... Here is the diagram for the horn circuit... http://www.fordification.com/images/sch ... ircuit.jpg everything is the same other then the 70 connector that you are using...

[tboneshep]

Both the marker (turn signal) and parking light do not work on the passenger side, as well as the rear turn signal, right turn indicator on the cluster. The flasher doesn't work for the passenger front. Horn now works! No power to the passenger side turn/parking lights.

If I disconnect the steering wheel connector, and use my test lamp on the #2 pin, will it show a connecton? There must be a common point where the circuits are not getting a charge? If I disconnect the Red Connector at the firewall (Passenger side #984, and test 984A I should see the light on the test light up?

Well, I will have to revist ths previous post to verify I converted all the correct wires from the steering wheel 68 connector to the wiring harness for the 70 connector

I will map the colors out and post them for you to review. There was one color that did not match, but I think Thunderfoot put me on the right course that matched. Rain for the next 3 days so, how much I get done depends on how wet I want to get!

Here's a before and after picture. The truck was hit by an Alder tree at XMASS. I debated whether to fix it, or haul it off. I hated to get rid of it becuase it was ugly and ran good, but I have never done this kind of work before, didn't think it would be possible. Anyway, thanks for the support.

[Tim P.]

kudos to you its real love to do that glad to see you save it. looks great.

[Thunderfoot]

that tree was hard on it alright... Looks real good now with the new cab on it Nice straight grill you got too... Glad your keeping her

If I disconnect the steering wheel connector, and use my test lamp on the #2 pin, will it show a connecton?

Correct, that is the first place I would go to now for the right front turn signal... Note: the front turn signal wire also goes to the dash indicator using wire 49... For the right rear turn check pin 282.

There must be a common point where the circuits are not getting a charge?

Hate to say but no.. I think you have a couple of problems to work on... Checking with the test light is the best way

If I disconnect the Red Connector at the firewall (Passenger side #984, and test 984A I should see the light on the test light up?

Yep, that's the one for the park light...

We're finally getting that rain here which was MUCH needed... finally got the forest fires out... Supposed to get a bunch of snow in the mountains tonight from the stor-m coming. Not much of a Fall around here, went from HOT Summer to cold wet lately...

[Tim P.]

We have been in the high 80,s here in Michigan setting records all over the place like summer all over again and humid as well.

[tboneshep]

Oh-the horror. I went to the junkyard and compared the connectors/connections on the passenger side. All appears correct. After looking at mine again, I discovered that the parking light connector on the harness was not completely plugged in as I could visually see the two prongs. When I made the complete connection, this is what I now have on the passenger side with the ignition on:

No parking light with headlights
Turn signal stays solid
No rear turn signal, no flasher, no inside dash indicator.

So, using my test light, I disconnected the connector between the steering column, and tested both sides of the connector with the ignition on. The only power I see is on the Blue-Yellow stripe wire that appears to be ground.

I then re-connected that part of the harness, and went over to the passenger side on the firewall and disconnected Big Red #984A connectors, with the ignition on, there was test lamp indicator on either connection, and none of the lights did work, I have re-connected the connector, and back where I am.

I reviewed my wiring splice between the 68 & 70 steering wheel harness, this is what I have, it may be the cuplrit:


pin 5 GREEN (0) OPEN
pin 2 White-Light Blue Strp pin 9 Yellow-Black strp
pin 3 Green-White strp Pin 10 Blue-Red strp
Grnd= Blue-yellow strp Pin 44 Blue

Some of the colors did not match up between the 68 & 70, but I very well could not have this right.

Pin 5 shows Orange/Blue on schematics
pin 9 shows Green & Orange
pin 10 shows Green/Red

70 Schematics:
http://ford.oldsmobility.com/images/sch ... ghts01.jpg


68 Schematics:

http://ford.oldsmobility.com/images/sch ... _81-85.jpg

[fordman]

green with red is brake lights. and should match 810 on the cab side of the harness. orange and green orange is for tail lights. the parking lights will be off when the headlights are on. trun the switch down one notch and check again. and it sounds like your flasher and or blinker flasher cans could be bad. do you have a blinking sound when you turn on the signal? unless you have the wires mixed up im unsure what your say which wires went where. column or cab harness? if you can tell me the colors coming from the cab harnes and the colors coming from the colum i can tell you what to hook to what i just had a similar problem.

[tboneshep]

Have a blinking sound and visual with Left (Drivers Side) Turn signal.

Raining again--will have to check the colors, it's confusing to me also. The pinout colors I mentioned before was for the 70 column harness.

So, the parking lights are not suppose to be on when the headlight is on?

trun the switch down one notch and check again

Not sure what that means??

I used the flasher from the original cab that worked.

More to follow.

[kaptnkaos]

Hey Tbone...

Yes, that is right on the '68's the parking lights do not work with the headlights on... both my '68 CS and my bus are that way.
There is way to bridge wires at the switch and they will work...
Do a forum search for that.. there's a diagram for it.
All you have to do is bridge the brown wire to the black/yellow wire, and the the parking / marker lights withh stay on with the headlights on.
I had problems with my turn signals for a couple of years...
until I discovered that there are 2 separate flasher units... after I replaced the 2nd flasher, I didn't have any more problems.

KaptnKA S

[tboneshep]

Obviously I must have basterdized something if the left parking light is on when the headlights are on, half a bridge!

[fordman]

the headlight switch has two positions when you pull it out. if you stop the switch in the first postion that will be parking lights only. let me know those colors and ill guide you through them. the column colors and the harness colors.

[tboneshep]

Thank you FordMan. I will have to get the colors tomorrow in the light!