turn signals
Thread Starter
Heel & Toe
Joined: Apr 2003
Posts: 17
Likes: 0
From: coon rapids mn
turn signals
bought a 73 over the weekend and the turn signals dont work, they keep blowing the fuse, does anybody have a schematic of the circuit they could email me or have a good idea of why they keep blowing the fuse, sure would appreciate it, also one last question, the tach, is it cable driven or electric? it dont work either and wwould just like to know before i dig into it this weekend, thanks for the help 
email address: wheeeedr1@msn.com
email address: wheeeedr1@msn.com
Burning Brakes
Joined: Feb 2004
Posts: 958
Likes: 1
From: In the Beautiful Shenandoah Valley of VA
Originally Posted by for image
bought a 73 over the weekend and the turn signals dont work, they keep blowing the fuse, does anybody have a schematic of the circuit they could email me or have a good idea of why they keep blowing the fuse, sure would appreciate it, also one last question, the tach, is it cable driven or electric? it dont work either and wwould just like to know before i dig into it this weekend, thanks for the help
email address: wheeeedr1@msn.com
email address: wheeeedr1@msn.com
Steve
Drifting
Joined: Nov 2002
Posts: 1,665
Likes: 1
From: Ontario
Probably you have a power wire shorting to ground. Trace the wires back from your fuse panel to the bulb sockets. Look for wires rubbing against sharp metal, wires that have cut through the insulation, bad connections at the bulb sockets/fuse panel/turn signal switch/blinker module. There is a small chance the turn signal switch or blinker module is bad but its more likely its a shorted wire somewhere. Ya schematics = good idea. 
Burning Brakes
Joined: May 2001
Posts: 988
Likes: 1
From: Dyersburg TN
Originally Posted by Steve's74
Yoy could simply have defective bulbs. Go to the Lectric Limited site and order a schematic for about $18 + shipping. Along with the AIM and factory service manuals, it is a great deal and mandatory for electrical work. Your tach is mecahnical, cable driven.
Steve
Steve
Thread Starter
Heel & Toe
Joined: Apr 2003
Posts: 17
Likes: 0
From: coon rapids mn
todbo, that does help, one question for you, when you put the new harness in your car, did it run by the wiper motor, the guy i bought it from just replaced the motor and he said they worked before that?
Racer
Joined: Apr 2004
Posts: 336
Likes: 0
From: Tucson
I had the same problem last month, except I was also blowing a fuse when I stepped on the brake pedal. I'm not an electric wiz, but I did the following:
1) Changed out the flasher unit located under the map pocket.
2) Replaced all of the rear bulbs, using contact cleaner on the bulb receptacles, before installing the new bulbs.
3) dropped the steering column. If this had been done before, the wiring harness may have been pinched when it was put back together. Ruffle the harness wires and / or check for wire damage. I testing the system before bolting the steering column back in place.
Which one worked? Who knows, maybe just my lucky day.
A mechanic friend of mine mentioned one other possibility. A part inside the column, related to the turn signal my be broken inside. This can also cause these symptoms. Again, luckily I didn't have to go there.
Good luck.
Randy
1) Changed out the flasher unit located under the map pocket.
2) Replaced all of the rear bulbs, using contact cleaner on the bulb receptacles, before installing the new bulbs.
3) dropped the steering column. If this had been done before, the wiring harness may have been pinched when it was put back together. Ruffle the harness wires and / or check for wire damage. I testing the system before bolting the steering column back in place.
Which one worked? Who knows, maybe just my lucky day.
A mechanic friend of mine mentioned one other possibility. A part inside the column, related to the turn signal my be broken inside. This can also cause these symptoms. Again, luckily I didn't have to go there.
Good luck.
Randy
