Key Accessory circuit on '70 tilt - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 4 (permalink) Old Feb 12th, 14, 6:13 PM Thread Starter
JPS
Tech Team
Joe
 
Join Date: Mar 2007
Location: CA
Posts: 514
Key Accessory circuit on '70 tilt

I have a 70 El Camino w/original wire harness in a sweep dash, feeding [exact year unknown] GM recycled tilt column. The install was down by a long gone mechanic years ago when I found the 're-built' tilt. Looks stock part for 70-72 GM [BPO?] and everything works [wheel is centered, horn signals, and Flasher work, except I never noticed the 'Accessory Power' not working, since I only recently installed a radio-cd.
I removed the AC vent cowl below the column which exposed the long wire plug mounted on the column and tested every terminal I could get my multimeter probe point into. As I recall, of the 8 or 10 probed, two were 'Hot'; maybe horn and buzzer or Flasher?
The remianing being turn signals and maybe be the Accessory power, but no dice with multimeter and key turned back into Accessory position.
I'll post a pic later on this long terminal or junction to see if anyone recognizes it.
Down the column and immediately adjoining is another terminal, but with maybe only 4 or 5 'ports' , but empty [no wiring].
Also, to further search for an 'Accessory Circuit', I found what I believe was my original radio power & ground feed; 3 wires: Black, Yellow & Grey. I'm guessing the Yellow & Brown were power for radio and radio lighting, with Black for ground. The ground works [tested to the cig lighter], but the others are dead.
At the moment, the only way to power up the radio, with the engine off, is to turn to the Start position. I converted to an HEI distributor and electric choke Edelbrock long ago, but it's probably not energy efficient to listen to the radio with the start circuit energized; probably not good for the coil either.

If the Accessory power was just never wired to the key switch in the tilt install or rebuild, any options to wire one in now?

Any comments or suggestions welcome- pictures will follow.
Thanks,
Joe
JPS is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old Feb 12th, 14, 6:38 PM
Senior Tech Team
Jim
 
Join Date: May 2001
Location: Carver, MA
Posts: 2,604
Re: Key Accessory circuit on '70 tilt

If the key will turn past "lock" to the acc position, and nothing works, I suspect the switch may need to be adjusted on the column. Might play with the adjustment a little and see if that helps. Might be a bad switch too, might try plugging in another if you have one and see if that will power up the accessories.
Good luck, Jim

72 Chevelle SS conv
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
72ragtop is offline  
post #3 of 4 (permalink) Old Feb 13th, 14, 1:38 AM Thread Starter
JPS
Tech Team
Joe
 
Join Date: Mar 2007
Location: CA
Posts: 514
Re: Key Accessory circuit on '70 tilt

OK. Didn't know it could be adjusted.
I'll search for a thread on it.
JPS is offline  
 
post #4 of 4 (permalink) Old Feb 13th, 14, 4:39 AM
Moderator
Levon
 
Join Date: Jul 1999
Location: Priddis, Ab. Canada
Posts: 9,268
Re: Key Accessory circuit on '70 tilt

You just loosen the 2 little screws and move it up or down the column as needed. BTW tilt switches are different than std columns. They work opposite of each other so make sure you have a tilt switch.

Levon Hovagimian
Team Chevelle #279
2015 Camaro ZL1 Summit White (Bone Stock)
70 Chevelle SS 454 LS5 4 speed. SOLD
Current Engine VortecPro 460 (513 HP) Original is resting
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

1966 427 Corvette SOLD
1973 Camaro IHRA Hot Rod (LS-6 Auto)11.00 @121 (Chased a 10.99 or better) SOLD

Priddis Greens, Ab. Canada


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
LevonH is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.

Email Address:
OR

Log-in









Old Thread Warning
This Thread is more than 2042 days old. It is very likely that it does not need any further discussion and thus bumping it serves no purpose.
If you still feel it is necessary to make a new reply, you can still do so though.

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome