bought a 70 d100 stepside this week and all the lights work but the pass brake light. cant find where it feeds to the wiring harness. tried wiring from the driver side to the pass side but if i try to use the pass signal with the brake light on the blinker quits. any help greatly appreciated. tried some truck sites but cant find a place comparible to the folks here. thanks:violent2:
not an a-body but need help please
- Thread starter rigrunner
- Start date
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67Dart273
Well-Known Member
When you troubleshoot stuff like this, you need to find a place to "divide" the problem, I.E. is it "this half" or "this other half."
One place in this case is to dig out the connector at the steering column. Here's how this works
Your brake light switch does NOT feed the lamps, but rather goes THROUGH the TS switch, so that when you, say, turn left, the TS switch disconnects the LEFT brake lamp, and hooks it up to the flasher.
So probe the connector.
Take a test lamp, ground the clip, and make sure "things" work:
Probe the connector at the steering column, check out the LEFT one first, because you think it works
Your tail/ turn/ stop lamps are:
brown is tail
yellow is left turn/ stop
green is right turn stop
So probe the connector and find a yellow wire (or yellow with tracer) and probe your lamp in there
Hit the brakes and make sure you get a light. Turn on the key, select left turn, and make sure the lamp flashes
Now you know that much works, probe the RIGHT side, which is the green wire.
Once again, hitting the brake should light the lamp, and making a right turn should flash the lamp
If you don't get a brake light, you probably have a bad signal switch If you get a brake light but no flash, you MAY have a shakey flasher, a shorted bulb, or bad ground at the socket in the rear. THAT IS BECAUSE many flashers will not flash without a "proper" load. That is, in other words, if you took a perfectly working system and simply pulled out either a front or rear lamp, it MIGHT stop flashing on that side.
Here's at least one diagram:
http://www.mymopar.com/index.php?pid=24
One place in this case is to dig out the connector at the steering column. Here's how this works
Your brake light switch does NOT feed the lamps, but rather goes THROUGH the TS switch, so that when you, say, turn left, the TS switch disconnects the LEFT brake lamp, and hooks it up to the flasher.
So probe the connector.
Take a test lamp, ground the clip, and make sure "things" work:
Probe the connector at the steering column, check out the LEFT one first, because you think it works
Your tail/ turn/ stop lamps are:
brown is tail
yellow is left turn/ stop
green is right turn stop
So probe the connector and find a yellow wire (or yellow with tracer) and probe your lamp in there
Hit the brakes and make sure you get a light. Turn on the key, select left turn, and make sure the lamp flashes
Now you know that much works, probe the RIGHT side, which is the green wire.
Once again, hitting the brake should light the lamp, and making a right turn should flash the lamp
If you don't get a brake light, you probably have a bad signal switch If you get a brake light but no flash, you MAY have a shakey flasher, a shorted bulb, or bad ground at the socket in the rear. THAT IS BECAUSE many flashers will not flash without a "proper" load. That is, in other words, if you took a perfectly working system and simply pulled out either a front or rear lamp, it MIGHT stop flashing on that side.
Here's at least one diagram:
http://www.mymopar.com/index.php?pid=24
omahamoparguy
Well-Known Member
- Joined
- Feb 19, 2010
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you need a test light to test each circuit. sounds like a bad ground. common problem in a pickup. a mopar car would basically have the same design system.(exept for the routing) If you can find a diagram for a valiant or coronet etc. would help. Learn to use the test light. there are several books on wiring trouble shooting.
spent all evening under it with a test light couldnt find anything. found the sweptline site and sounds like the turn signal switch is bad. 67 dart i will try checking at the connector tommorow and thanks to you both for the help.
daredevil
Well-Known Member
http://www.mymopar.com/index.php?pid=24 this link has wiring diagram just load 68 to 71 pdf
vintageozarks
Member
Do what 67Dart said & make sure the hazard switch is not stuck part way on
70DartMike
Too many projects
There is some good advice and troubleshooting up there. Also, make sure you sign up at www.sweptline.org, there is some awesome info on there for our old Sweptlines.
thanks folks. will try to post a pic tommorow for ya. didnt have time to check out the lights today traded the wifes car got a chryster town and country now i have all mopars yay. also the truck has a major oil leak. i think rear main. how much trouble to replace and should i do oil pump at same time just because>?thanks
got registered at sweptline.org and found alot of great info. still trying to find out about the turn signal repair kit though? thanks again as soon as the weather warms up ill be back on the valiant. got a new gas tank and sender from a member here and gonna try the front end rebuild. the trucks gonna be my beater for around town and such
got the trun signal cam and that fixed my brake lights but while testing it while i had the switch out of the column i managed to ground the one of the turn signal switch wires off on the column now my brake lights work but my right rear turn signal and my front indicator on the dash and front right signalk are out. ant thoughts on where to start looking thanks. ive poted this on the sweptline site too but need info fast thanks again
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