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turn signal or horn relay which one goes there

Started by AmadeusCharger500, August 03, 2022, 03:34:47 PM

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AmadeusCharger500

Ok this might be dumb or redundant but its related to about 4 different electrical problems that I am just not mentally equipped to handle. Car is a ground up build 73 charger.

1) Which relay goes to the fuse box as seen in photos, Turn Signal or Horn? I am assuming turn signal but its confusing because they both fit.
My horn doesnt work btw, although it does make a small click sound in the steering wheel.

The car has a replacement dash harness from I don't know where, some 70s mopar.




Nacho-RT74

 horn/key in buzzer

http://www.dodgecharger.com/forum/index.php?topic=137189.0

Turn signal doesn't use relay, but a flasher... located between ashtray and glovebox
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

AmadeusCharger500

Well that is strange because my turn signals only work when I plug that black colored one into the fuse box.
Anyway I think I found the turn signal wire. If you could identify some of these items it would really help. The one on the far left with the bracket was attached to the dash frame between the ash tray and glove box. I'm not sure how to test any of these. Some of them do not have numbers printed. The one in the middle top row is new and was allowing my turn signals to work.

AmadeusCharger500

I guess that black and red wire is for the flasher. I don't know what any of the other wires do except maybe the hacked ones are door jamb switch?

Nacho-RT74

1st row from left to right

-Lights on warning buzzer

-whatever generic relay

-horn relay/keys in buzzer

Bottom row

-turning flasher... emergency could look the same but with a green stripe meaning heavy duty for up to 6 bulbs. Althought factory used a squared one with same prongs disposition, but round replacements are accepted

-ignition courtesy light time delay flasher
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

Nacho-RT74

Yes, turning lights flasher plug is that red and black wires plug

The 3 ways plug is for the ign courtesy light time delay flasher. Sigle prong yellow wire feeds the wire coming into the column light also yellow but female.

Bullet yellow wires plugs into the black female rubber provision for bullet terminals. Is the door jam ground feed. I can see one coming out from top of pic, which I guess could be coming from map light

Two yellow wires without any plug insulator... door jam switch. They are not hacked, but are factory like that. I guess the harness comes from a 72? As far I recall 73 gets just one for passenger side.
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

AmadeusCharger500

That is so helpful thank you Nacho!
And apologies for my lag. Just doing a lot of other stuff when I would rather pay attention to this car.

Okay, so I got my flasher relay in the right spot now. There is another 3 way plug like that direct behind dash. I just found out that is the 4 way flashers. Wow I'm making progress. I also found out the "lights on warning buzzer" works. I accidentally found that out by plugging into the 4 way flasher wires. When I turned on the 4 ways it would buzz. So it has same plug config as the flashers but I cant find a set of wires/plug to attach. It was mounted behind the glove box and I don't think I ever touched it before. Anyway happy that it works but not sure I have the plug for it.

My next adventure is getting door jamb switches. From what you tell me Nacho perhaps I need for a 72?

Below is a pic of the drives side questions

1 wire orange?
2 wire greenish with bullet plug?
3 wire Yellow, yellow trace, and black

70 sublime

Green wire with bullet end

Do you have the switches in the door frame that make the dome light come on when the door opens ?

looks like it is about the right length to reach there

Orange wires are usually lights like the ones in the dash
looks like the wire is long and bunched up
If you straighten it out how far will it reach ?
next project 70 Charger FJ5 green

AmadeusCharger500

I do not have the switches in the door jams. I cant even order them until I figure out what year im looking for.
Orange wire reaches almost back to rear seat belt if I run it along the rocker.
Green bullet is Door jam switch? Its more likely the yellow wires would reach that hole.
Also I just found this black w white trace wire looks like it would plug into that green.


Nacho-RT74

Orange network is dimmered cluster lighting. Being that long could be the wire running up to the console coming out from the feed on dash harness? It should run from driver side of dash up to passenger side kick panel throught the dash frame, then get an extra pigtail to reach the shfter down the carpet

Light green with female bullet plug is for hideaways. It triggers up the hideaways system. Hideaways is a separated harness thought, but that feed it comes from the headlight switch to trigger the light doors which ends into the floor dimmer switch to become on low or high beams. That confirms you got a 71/72 harness along with the door jam switch plug. If your harness got the seatbelt relay setup, is 72.

Black male bullet plug is emergency brake switch

Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

Nacho-RT74

Need to note, if that wipers switch hanging down came with the harness you got a 71 harness. Is a one year wiper switch for 3rd gens. 72/74 are diff and with diff plug/prongs disposition.

Will need to take care of matching with engine bay. Several changes were made along the 3rd gen production on the harness. Every year is diff from the other at least for minimal details. 72 and 73 are the closer between them and easier to match thought

The time delay flasher feeds the seatbelt warning light on 71s, not just the courtesy light. Since 72 seatbelt light and buzzer was relay/control box controled which included seats and seatbelt sensors. Not on 71 thought. No seatbelt buzzers on 71, just the warning light flasher controled

71/72 door jam switches are hard/expensive to find
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

70 sublime

Well at least I got the orange wire right that it is for a light some place

I am working on 73 stuff myself
next project 70 Charger FJ5 green

CDN72SE

Hey Amadeus, I'm working on wiring my 72 dash and recently bought these switches to replace my originals. Purchased from 521 Restorations.

Door Jamb Switch Set (71-72 A/B-Body) - Two large thread switches - one 3 terminal and one 2 terminal (E-JSKIT06)
1972 Charger SE

AmadeusCharger500

Thanks again NACHO. That solves my door jam switch mystery. Yes that wiper switch fits the harness but did not come with it. I aquired it separate. Unfortunately I have not been able to get it to turn on the wiper motor. Perhaps your caution was about matching this with engine bay.
Also all those other details, Fantastic, thanks again~!




AmadeusCharger500

Quote from: CDN72SE on August 17, 2022, 09:56:10 AM
Hey Amadeus, I'm working on wiring my 72 dash and recently bought these switches to replace my originals. Purchased from 521 Restorations.

Door Jamb Switch Set (71-72 A/B-Body) - Two large thread switches - one 3 terminal and one 2 terminal (E-JSKIT06)


I just placed the order, thank you so much!

CDN72SE

1972 Charger SE

Nacho-RT74

Quote from: AmadeusCharger500 on August 17, 2022, 02:36:14 PM
Thanks again NACHO. That solves my door jam switch mystery. Yes that wiper switch fits the harness but did not come with it. I aquired it separate. Unfortunately I have not been able to get it to turn on the wiper motor. Perhaps your caution was about matching this with engine bay.
Also all those other details, Fantastic, thanks again~!





Wiper motor harness will match. Differences are on the engine and forward lighting harnesses. Stuff like ign trigger to starter relay, brake warning light wire at proportioning block, horn, wiper washer pump and some others were turned around on diff positions between all 71/74. As mentioned, the closers are 72 and 73.

Also your 73 got original seatbelts light and buzzer warning system which 71 didn't ( aside the the light under the time delay flasher control ), so mostly sure your 73 Tranny harness gets an NSS signal into the cab for this seatbelt warning system what 71s don't. On 71 the empty tranny cavities were used just for blower and AC compressor clutch, while on 72/73 with the NSS signal just one cavity was left and used for blower, and AC compressor clutch run throught the engine harness block on bulkhead. If tach, 72/73 got the wire out of the bulkhead throught the firewall, but on 71 an empty cavity on engine harness block was used. 74s used the empty cavity at Tranny harness for tach, while the AC wiring ( clutch and blower ) run through the firewall.

And some details more, but wiper system remained the same.
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

AmadeusCharger500

Lots more info there. Thanks x1000.
Update. I got my wiper motor working! It even does variable speeds and parks. AMAZING!
Turns out the switch contacts needed cleaning. I was messing around with some other stuff and it just turned on when I bumped switch and then would not turn on after that. So I took it apart and cleaned the contacts. Put some contact grease on and Voila!

However the washer jug motor does not work with the interior switch. It does work with a hot wire. This variable speed switch has one extra contact tab that is not being used from my dash harness. Nothing to plug onto it. Should that tab be wired to the washer motor?

Also the horn wire is constant hot. From what you told me I have a 71 dash harness. Did 71 run a different horn setup? I know I have a 73/74 fore ward light harness because I bought it new. Could these things be conflicting?

Nacho-RT74

There was still foot pump 71s but can't talk on this case. I don't think a variable setup will carry a foot pump, but electric pushing in the switch/knob. I have a 71 variable switch ( the harder and expensive to find ) also which I got by casuality installed on my 74 and it works pushing the knob which in facts activates inmediatly the wipers ( 72/74 could get washers on without get the wipers working).

Remember I told you YOU MUST MATCH the harnesses. Wiper washer wire doesn't run throught the wiper harness but either throught forward light harness or engine harness. 71/72 are the ones running with the engine harness as far I recall, but then on 73 OR 74 was changed to the forward light harness

The extra prong is as far I recall for ground. Not needed on this case since it gets grounded unded throught the chassis.

Horn. If you check on back of fuse box will find the violet wire coming ot from batt source on back of fuse box. Black wire is the trigger coming from steering wheel, being ground, and the feed to the horn being green with red trace... being positive.

The horn relay gets an extra prong appart from the three prongs group which is to the key in warning buzzer. This is also feeded by a black wire coming out from the driver side door jam switch

The horns will get this signal, but horns are chassis grounded.

Conflict between your actual dash harness and the new forward light harness? Sure! As mentioned will need to match them. But you should have either a 73 or 74 forward harness. None of them is exactly the same.
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html