View Full Version : No dash lights, nothing :-(


smith69z
Aug 13th, 05, 05:48 PM
I almost have finished completly rewiring my 69. Not that everything worked first try. Like my son plugging the pos alt cable on the grn screw. That was interesting. I couldn't understand why the little cable from the battery was starting to melt when I connectted the pos to the battery. Still need to do the back half of the car Anyway......

I have no dash lights at all, nothing, I seem not to have power at the little fuse in the fuse block. Checked 4 grounds. Under the light switch is good. Middle of the dash good and neg battery onto fender good drvs side light wiring grd, good. I have two firewall to valve cover grds and two frame grounds. I have headlights, and parking/side lights but not a blink from anything on the dash. Any ideas guys? And the car even turns over. Waiting for the Harmonic installer then back to alignment of the pulleys. Another thread and problem. Any ideas would be apprecated. Getting so close that I can ALMOST smell the exhaust.
Some say restorations are fun, I say its an obsession!

69-er
Aug 14th, 05, 10:22 AM
Have you tried turning the light switch knob? It might be in the fully dimmed position. If that's not it, there should be 12 volts at the dark green wire at the light switch when the knob is fully turned ccw. If nothing's there, it might be the instrument light rheostst in the switch.

smith69z
Aug 14th, 05, 10:59 AM
Thanks 69-er, I have turned the knob but nothing. I'll check that green wire for the proper voltage. I don't even have gen lights when the key is on.
Thanks at this point I am out of ideas and any suggestions are appreciated!

69-er
Aug 14th, 05, 01:03 PM
I've been working on some full color wiring diagrams for the 69 Camaro. There's one on the instrument lights. There's a couple of small details I still need to research, but it's basically all there.


Larry

http://hawkpichost.com/ims/album.php?u_id=47kT1HB

sandiegoz28
Aug 14th, 05, 03:06 PM
I just went through this problem on my Chevelle. I put in a new dash harness and no dash lights. In my case, one of the dash lights was grounding on the metal dash supports.

To verify you have a ground problem - due this: Remove the dash light fuse. Turn on the dash lights. Install a fuse. If the fuse blows the instant you installed it, you have a ground issue (ie - one of the gray wires or bulb sockets is grounding out.).

If that is indeed the case, you will now need to troubleshoot all the gray wires that lead to the dash lights. Check each one carefully, making sure its not grounding out.

In my case, I actually removed the dash bezel/instrument cluster and started the diagnositcs. Took awhile and was a pain, but that's the only way to find it.

Good luck!

smith69z
Aug 14th, 05, 04:44 PM
Well, I think I found the trouble but not sure of the resolution. I have no power at the fuse for inst pannel. I connected a wire from another fuse and
I had inst lights. So my problem is why no power to that fuse/section of the fuse panel??
Thanks for the GREAT support!

smith69z
Aug 14th, 05, 04:48 PM
69-er,
GREAT drawings! Much easier to follow then the books!!!

69-er
Aug 14th, 05, 05:37 PM
Well, I think I found the trouble but not sure of the resolution. I have no power at the fuse for inst pannel. I connected a wire from another fuse and
I had inst lights. So my problem is why no power to that fuse/section of the fuse panel??
Thanks for the GREAT support!

Thanks for the compliments on the wire diagrams.

Well, you said your parking lights lights work. That means the "tail" fuse is good since that also supplies power to "inst" fuse through the light switch. There must be a problem between the light switch and the inst fuse, that green wire. I bet there is no power at the light switch's green wire since you said the "inst" fuse has no power. If there is none, the rheostat circuit is probably open.

Larry

smith69z
Aug 14th, 05, 07:19 PM
Thanks Larry! Maybe its time to try a new light switch.

69-er
Aug 14th, 05, 07:23 PM
If you don't have a spare switch for troubleshooting purposes, connect a test light to the green wire terminal before you buy a possible non-returnable switch. Save ya some dough on a new switch just in case it's not the problem. ;-)

Larry

KevinW
Aug 14th, 05, 07:39 PM
Don, I have bunch of old light switchs and all the other stuff if you need to test some things.

smith69z
Aug 16th, 05, 04:12 PM
Problem fixed. Turns out I had a bad headlight switch. larry's diagram showed
how the switch feeds the int fuse then the dash lights. I used my RS headlight switch as a test and it worked.
Now to figure out why I blow a fuse evertime the brake lights go on.
Electrical is so much fun!!!

edd Gordon
Aug 16th, 05, 04:33 PM
Super nice wiring drawings

69-er
Aug 16th, 05, 08:12 PM
Now to figure out why I blow a fuse evertime the brake lights go on.
Electrical is so much fun!!!
Glad I could help you.

Shorts can be fun ;-) I guess the easiest way to start would be to start at the back and disconnect the harness connectors for the rear lights and work your way up to the front. It could be a bad bulb socket, or a bare wire touching metal. Do the lights actually illuminate?

Larry

69-er
Aug 16th, 05, 08:13 PM
Super nice wiring drawings

Thanks! Keep checking back. I've been adding more every other day or so.

Larry

smith69z
Aug 17th, 05, 07:15 AM
All the lights work in the back and I do get a flash when I hit the brake but then the fuse blows. I do have the grd connected in the middle of the light harness in the trunk. I'll double check everything tonight. Thansk for the GREAT support. I HATE electrical troubles!!!
BTW; No blinkers either. Nor does the dash blinker light come on at all but all lights are externally.

Scotts67
Aug 17th, 05, 07:59 PM
Treading on thin ice here as I have a 67' but I had brake lights blowin fuses as well. You said "No blinkers either. Nor does the dash blinker light come on at all but all lights are externally", the brake and blinkers should feed through the turn signal switch under the dash, unplug it and check your brake lights/signals blowin the fuse (without it obviously no power, no blow). It could be bad turn signal switch... I had signals but blew fuse depressing brakes due to accidentally grounded main wire (white on mine) that was the hot for brake lights that went through the turn signal switch... just something else to look at (unless 69 is that much different...) :confused: