Question about Dodge Ram 2500

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Left turn signal at the trailer plug is 10 vdc the right turn signal is 12 vdc

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  • Dodge Master
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It sounds that you have a voltage drop caused by bad wiring or a bad connection for the wiring of the trailer plug. you need to check the wiring of the trailer plug wiring back to were it connects to the truck wiring.pay attention to the condition of the plug connector itself.

Posted on Mar 17, 2011

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Posted on Jan 02, 2017

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2 Answers

I have a 97 Ford aerostar van with tow package. when the head lights are on the trailer ligts are but turn signals don't work how do I fix this?


The turn signals don't work on the trailer or the van when trailer connected or turn signals don't work on the van without the trailer connected?

Nov 15, 2015 | Ford Cars & Trucks

1 Answer

How to wire trailer plug


hope this helps


6 pin socket

w1s.jpg

w1p.jpg

6 pin plug


7 pin socket

w2s.jpg

w2p.jpg

7 pin plug


5 pin socket

w3s.jpg

w3p.jpg

5 pin plug



7 pin socket

w4s.jpg

w4p.jpg

7 pin plug



7 pin socket

w5s.jpg

w5p.jpg

7 pin plug



7 pin socket

w6.jpg

7 pin plug





12 pin socket

w7.jpg

12 pin plug



small 6 pin round plug & socket

1 tail, clearance - brown

2 left hand turn - yellow

3 right hand turn - green

4 stop - red

5 electric brakes - blue

6 earth - white



small 7 pin round plug & socket

1 left hand turn - yellow

2 reverse - black

3 earth - white

4 right hand turn - green

5 electric brakes - blue

6 stop - red

7 tail, clearance, side markers - brown

roundskt.jpg round socket

large 5 pin round plug & socket

2 left hand turn - yellow

3 earth - white

5 right hand turn - green

6 stop - red

7 tail, clearance, side markers - brown



large 7 pin round plug & socket

1 left hand turn - yellow

2 reverse - black

3 earth - white

4 right hand turn - green

5 electric brakes - blue

6 stop - red

7 tail, clearance, side markers - brown



7 pin round heavy duty plug & socket

1 earth - white

2 left hand rear , clearance and marker - black

3 left hand turn - yellow

4 stop - red

5 right hand turn - green

6 right hand rear , clearance and marker - brown

7 reverse/auxilary - blue



7 pin flat plug & socket

1 left hand turn - yellow

2 reverse - black

3 earth - white

4 right hand turn - green

5 electric brakes - blue

6 stop - red

7 tail, clearance, side markers - brown


7_flatsocket.jpg flat socket

12 pin flat plug & socket

1 left hand turn - yellow

2 reverse - black

3 earth - white

4 right hand turn - green

5 electric brakes - blue

6 stop - red

7 tail, clearance, side markers - brown

8 battery supply - orange

9 auxiliaries - pink

10 earth - white

11 rear fog lamp - grey

12 auxiliaries - violet


Feb 02, 2013 | 2004 Toyota RAV4

1 Answer

No power on trailer plug for lt signal on a 2500 hd gmc


get the standard wiring design
http://www.narva.com.au/products/browse/wiring-diagrams
Yellow is the left turn signal on pin 2
Check trailer plug and see if correct colors used on trailer plug
Would suggest getting a 12volt probe so you can test the car socket when left indicator is going on - flashing
To check that the correct pin has 12volts flashing left on it.

Jul 16, 2017 | 2003 GMC Sierra 2500HD

1 Answer

Location of fuse to control side mirrors on 2009 97x


Fuse panel in end of fascia
No. Amp. Function
1 15 Steering wheel lock
2 5 Steering column unit; ignition switch
3 10 Hands-free; cabin CD changer; SID
4 10 Main instrument unit; manual climate control;
automatic climate control (ACC)
5 7.5 Control module in front doors; Park Brake Shift Lock
(automatic transmission)
6 7.5 Brake light switch
7 20 Fascia fuse panel; fuel filler door
8 30 Control module in passenger front door
9 10 Fascia fuse panel
10 30 Trailer socket; electrical socket in storage compartment
between seats
11 15 Data link connection (diagnostics)
12 15 Interior lighting incl. glove compartment
13 30 Accessories
14 20 Radio, sound system I; control panel,
Infotainment System
15 30 Control module in driver's door
16 - -
17 - -
18 7.5 Manual climate control; fan
19 - -
20 7.5 Headlight levelling switch
21 7.5 Hands-free; brake light switch; manual climate
control; clutch pedal switch
22 30 Cigarette lighter
23 40 Cabin fan
24 7.5 Airbag control module
25 - -
26 5 Yaw sensor (cars with ESP)
27 - -


Trunk fuse panel, left-hand side
No. Amp. Function
1-5 MAXI -
6 30 Control module in left rear door
7 30 Control module in right rear door
8 20 Trailer
9 - -
10 30 Left-hand brake light; rear right turn signal; right tail
light; right reversing light; high-mounted brake light;
trailer lights
11 - -
12 - -
13 - -
14 - -
15 15 Seat heating, left seat
16 15 Seat heating, right seat
17 7.5 Autodimming rearview mirror; rain sensor; tire
pressure monitoring
18 15 Sunroof
19 7.5 Telematics (OnStar)
20 7.5 DVD player (navigation system)
21 7.5 Saab Parking Assistance (SPA); control module in
rear doors
22 30 Amplifier, sound system III
23 - -
24 10 Movement sensor; CD changer in trunk (accessory)
25 30 Electrically adjustable driver's seat with memory
26 30 Right-hand stop light; rear left turn signal; left tail
light; rear fog light; left reversing light; license plate
lighting; trunk lighting; trailer lights
27 - -
28 - -
29 - -

Fuse panel in front of battery
No. Amp. Function
1 60
MAXI
Secondary air injection pump (certain models)
2 20 Fuel pump; preheated oxygen sensors (lambda
probe)
3 10 A/C compressor
4 30 Main relay
Relays
1 Secondary air injection pump
2 A/C-compressor
3 Preheated oxygen sensors (lambda probe)
4 Main relay, engine (ECM/EVAP/injectors)

Sep 13, 2012 | 2006 Saab 9-7X

1 Answer

1998 Ford Explorer has factory trailer wiring ... won't light the left turn signal light on trailer or left brake light ... bulbs are good, all lights work when vehicle lights are on except the left...


Use this as a guide and a 12 volt test light, or multimeter to see if power at proper terminal from truck. If power there, then connection at trailer plug, or wiring from there to tail lights on trailer is faulty.motor1258_22.jpg

May 19, 2011 | 1998 Ford Explorer

1 Answer

I have a 1999 ford 150 and need the color code for rewiring the trailer lights


7 way trailer lights:
Black- 12 volt (power)
Brown- tail lights
Yellow- Left turn signal
Green- Right turn signal
Blue- Brakes
White- Ground
Orange- Auxiliary power (not always used, but example would be trailer back up lights, if equipped

Mar 14, 2010 | 1997 Ford F150 Regular Cab

1 Answer

Right Turn Signal acts like the Emergency Flasher.


If you have an aftermarket trailer plug on your truck, you are going to want to inspect the wiring to the plug, and the connections in the plug. I think it's shorting out.

Jun 18, 2009 | Chevrolet Silverado 3500HD Cars & Trucks

1 Answer

LEFT TRAILER TURN SIGNAL DOES NOT WORK


I have seen once before that the fuse box was bad on a 2003 Dodge 3500. I had power in and nothing out. We had to replace the box. Not cheap! Hope it is simple like a loose connection though. I think I had to pull the inner fender on the drivers side to access the bottom of the fuse box. Pain in the ****, but...

Feb 25, 2009 | 2004 Dodge Ram 2500

1 Answer

LEFT TRAILER TURN SIGNAL DOES NOT WORK


I'd get a 12vdc test light if you don't have one already & start from plug, and keep probing back from there. It may be as simple as a bad connection under truck where joined into harness.

Nov 29, 2008 | 2000 Dodge Ram 1500 Truck

1 Answer

Trailer wiring diagram


Either buy an adapter that will go into your existing harness, usually up under, near rear bumper, you pull connector apart & put adapter in line, then you plug new flat4 into it. Otherwise I would pull inside covers of both tailights, use a 12 VDC light tester, and probe wires at right signal for flashing with blinker,and attach Green wire, from flat4 to it. Do same on left side & attach yellow flat 4 to it. Turn off blinkers, and just put your running lights on, Find wire with power on either side when running lights on, and attach brown flat 4 to it. Now find some clean metal in the area and attach white wire (ground) to it. Put inside covers back on & your done.

http://www.etrailer.com/faq_wiring.aspx

Nov 13, 2008 | 2000 Dodge Caravan

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