on my 61 truck i went under the dash and no joke removed about 30 feet or so of extraneous wiring. before i did this i had several problems. no dash lights, erratic turn signals, erratic fuse blowing, and c. after i did that all kinds of new things worked. i would suggest that you:
1) examine your wiring for hack jobs, and potential shorts
2) check the bulbs, just in case
3) the wires will lead you to a fusebox if you are dilligent, generally under the dash by the drivers feet
good luck, and good day.