Replacing front turn signal socket on 1990 dodge shadow

Dear Alex,
The problem is in the bulb, or the socket, or the wiring to these.
Whenever a turn signal flashes fast, know that one of the bulbs is not working.
You have already identified the problem as being the front one. Problem could be the hot wire, or the ground wire, or the ground connection to this bulb.
Start by taking a tester to the hot wire, and see if it is receiving electrical impulses when the turn signal is on.
( It probably is, unless the car has been in a wreck and has been improperly repaired.)
Then check the socket or the wires to is and see if the bulb is grounded.
I suspect the ground is defective, and either a new socket or a repair to the ground wire should fix you rights up.
God bless your efforts.

Could be a wiring problem, or the turn signal switch.
You could check the wiring with a meter, and also by using the emergency flashers. Those use a different circuit from the turn signals on most cars. If the light works using the 4-way flashers, the problem is probably the turn signal switch.
You need to know if the socket has power and ground when the lamp should be flashing.

No - headlight ok.
The reason that the Right turn signal blinks fast is that there is half the normal load (resistance)
on the right side, since the Right front turn signal isn't working.
Since you replaced the Right front turn signal bulb, your problem lies in the bulb socket or
the wiring to the socket.
(1) try cleaning out the socket - there's probably a contact problem in the socket. You
may need to squeeze the contacts together to provide good contact to the socket contact.
(2) if contacts inside the socket are ok, try back-probing the socket - to make sure that the
socket is getting 12V DC to light the bulb. Replacing a bulb socket is easy, and commonly done.
Any auto parts dtore should be able to sell you a new socket - its just a matter of cutting out the
old one, and then splicing in the new one. Most shops will use small wire nuts, buried under several
wraps of E-tape (electrical tape).
(3) if bulb AND socket ok, you have the worst problem known to man - a wiring fault. In this case,
you'll want to run a new wire from the flasher module (under the dashboard) to the turn signal.

Check & inspect bulbs and sockets on the right side front and rear. Also check the bulb and socket you just replaced.

Hi
Sounds like a ground problom or bad socket to the frunt turn signal
if the socket liooks rusty or green color i would replace it. you can get a replacemint at a auto parts store. if it is the gound ,,, trace the wires back you will see where the light has a wire grouns to the frunt radator suport remove the bolt here and clean it up,, this should get you going........ Let me know if i can help more

Check the bulb socket for a burnt or a shorted condition. Remove bulb and try another bulb, if it does it again then you have a short in the socket or wiring to bulb. Turn on the 4 way flashers and see what it will do. If it continues then look for any burnt wire connector or wireing to bulb. Check the wiring behind the light for any metal that has cut into the wiring insulation. Hope this will help you.

You need to check for power coming out of the turn signal switch with a test light, or voltmeter. On older Chevys, the R/F turn signal wire is dark blue. Check the color of your wire at the bulb socket, then locate the turn signal switch connector, and probe that color wire with the ignition switch on, and turn signal switch in the right position. If you have power coming out of the T/S switch, you have bad connection, or open circuit between it and the bulb socket.

1. Turn 4 way (hazard) lights on check to see that all lights are flashing if rear is not flashing suspect bad ground since 4way usually goes through brake light.
2. If everything flashes you may have a bad flasher relay find it replace it.
3. If light still will not flash check light socket by removing bulb & looking for burnt melted contacts or plastic. You find any of these problems consider replacing socket.
4. If you do not find any problems with socket use a cheap test prob connect alligator clip to metal ground near socket with bulb out turn on blinker carefully touch each contact inside socket when you find the right contact prob should light up & blink.
5. If you cannot get prob to blink move prob ground to new location do step 4 again.
6. If you still get no blink start probing wires coming into socket until prob lights working away from socket.
7. Ground is on the side of the socket when you look in it.
   

You need to check for power & ground at left rear socket, and clean it & contacts in it well, and may have to squeeze socket a bit to supply better ground to outside of bulb base. If that doesn't work, poke wires going into back of socket with test light, with signal on, and if power present, replace the socket assy. About $5.00

you probably have a bad ground connection in the socket. where the 3 wires come in. There ar 2 that go to the middle and one off to the sied of the socket. the one to the side, usually black, is the ground. You can try to wiggle it but be careful due to posible corrosion in the socket, it may snap the wire. That is what happened to me and I needed to replace the socket after that.