67 cuda wiring issues
Ok guys, I need some help here. I have a few wiring gremlins I need to get sorted.
1. I need to connect my msd to 12v ignition 'on' but I'm only getting 11.6v from that wire which is a black with white tracer wire at the ignition Switch. 11.6v isn't enough to fire the engine. I have 12.3v at the bulkhead connector inside the car for that same wire. So I am loosing volts Somewhere?
I have replaced the starter relay but same problem. If I hook that msd wire to another wire under the dash that does have 12v such as the cigar lighter positive wire, she starts straight away but obviously it won't turn off with the key.
The wiring diagram at which I am looking does not show a black wire with a tracer at the ignition switch. How did you identify that particular wire? Do you have a wiring diagram? Ignition on is usually dark blue with tracer.
2. My RH reverse light is not working and RH flasher/blinker is very dull. When I earth the housings on both near where the globes fit, they
work great. It's weird that's it's both RH side earth problems. Do they share earth the same earth wire somewhere in the harness.
Wiring diagram does not show colors on ground wires. Some components are grounded through the component housing to the body. I do not know about a 1967 Barracuda. The wires to operate the right rear lights are black, brown and violet. Obviously, that lamp housing is missing the ground. Look at the left lamp housing and see how it is grounded. The lamp wires on the left should be black, dark green and violet.
3. Fuel gauge not working. I have the pulsating signal at the fitting to the sender which is new.
If I put power to the blue wire from the kick panel, the gauge goes up to full. I've read a heap of old posts about this but....
The sending unit must be grounded. This is usually done with a spring clip that clips onto the pipe going in the sending unit and the metal fuel line on the chassis. Do a search for "sending unit ground clip" for your car. Sold on ebay and purveyors of fine Mopar restoration parts everywhere.
4. I have dull dash lights at the speedo gauge, but not the little vac gauge in the middle or fuel/temp/amp gauge. I have tested each globe and globe holder. The dimmer works, but they are still dull.
Not enough info. Could be weak bulb or dirty connection to the circuit board or just different bulbs.
5. At the back of my cluster I have a big red wire and a big black wire that bolt straight to the cluster mother board. Both of these have power. I would have thought the big black wire would be neg and the red being positive??
The big red and black wires connect to the ammeter. Both have battery voltage on them. Unless the battery is dead.
6. My grounding wires are new and I have the following: battery to chassis, engine to chassis, chassis to dash frame.
I don't have one from the sender to the tank strap and I can't see one from the dash frame to the cluster, I'm not sure where to connect it to on the Cluster.
The cluster is usually grounded through the mounting screws to the dash panel. It is not unheard of the add a ground to the cluster. Location depends on your cluster.
So apart from all this, everything else works fine. :banghead:
Well, glad to hear it. :)
I am no Mopar expert. I am just looking at some wiring diagrams. Links below. You can look and see if they match your car. If not, everything I told you is crap. You're welcome.
http://www.mymopar.com/downloads/1967/67BarracudaA.jpg
http://www.mymopar.com/downloads/1967/67BarracudaB.jpg
Click on the diagram to enlarge it.
