: Need some wiring help (incl pics)
thenewpappa Apr 11th, 09, 2:32 PM I need some advice on some wires. Hope somebody can help :-)
(70 El Camino, original A/C car but will be deleted)
1) This orange wire comes from the fuse box. It was cut when I got the car. What does/ did it do?? And can I just leave it there?
http://i28.photobucket.com/albums/c250/thenewpappa/IMG_0289.jpg
2) This plug was not connected. It has black wire with pink stripe. It goes to a soldered junction with some other black wires. What does/ did it and what to do now?
http://i28.photobucket.com/albums/c250/thenewpappa/IMG_0288.jpg
3) I beleve this is the TCS relay??? The wire on the right (green) was not connected. Again, what does/ did it do and what to do now?
http://i28.photobucket.com/albums/c250/thenewpappa/IMG_0290.jpg
4) Finally, this white wire goes to the min-side of the ignition coil. For what??
http://i28.photobucket.com/albums/c250/thenewpappa/IMG_0292.jpg
Dean Apr 11th, 09, 2:52 PM 1. Looks like the high speed feed wire to the blower relay.
2. ? don't remember a plug like that.
3. Don't see a green wire but guessing it goes to the two terminal temperature sensor on the passenger's side head. :confused:
4. restive wire feeds 9 volts to coil and yellow wire comes from starter's "R" terminal to supply full 12 volts to coil during starter cranking.
thenewpappa Apr 11th, 09, 3:03 PM Dean, you're quick!! And thanks.
1) So if not connected, I only have 3 speeds on the blower? Whete is the blower relay located?
3) After cleaning it's green, it looks black due to dirt. This one was connected on top of the a/c box? So can be cut/ put away?
4) I dont remember having a yellow wire for starter R terminal to coil?? Is this a must have?
If there was a yellow wire, where does it run to?
Dean Apr 11th, 09, 3:15 PM Dean, you're quick!! And thanks.
1) So if not connected, I only have 3 speeds on the blower? Whete is the blower relay located?
Yes ... Relay mounts on top of the Heat/A/C plenum
3) After cleaning it's green, it looks black due to dirt. This one was connected on top of the a/c box? So can be cut/ put away?
Sorry, don't know
4) I dont remember having a yellow wire for starter R terminal to coil?? Is this a must have?
If there was a yellow wire, where does it run to?
The yellow bypass wire (looks like it between your finger and thumb) connects to the coil's + terminal on one end and the starter's "R" terminal on the other end.
It is only needed if you still have the old points style distributor, in which case, the coil runs on 9 volts and only gets full voltage during starter operation.
thenewpappa Apr 12th, 09, 3:03 AM Thanks Dean, appriciate it.
Any others with ideas??
undee70ss Apr 12th, 09, 5:49 AM 1. The A/C harness is a seperate harness that controls all heat and A/C functions. All dash harnesses have the heater wiring. The dash heater wiring is not used when a car has A/C. Under the hood there is also a 14g orange wire that went to the blower motor as all engine harnesses had the wire for the blower that is not used in a A/C car. The heat only wires were left unconnected from the factory.
2. TCS power feed.
3. TCS relay. TCS is only needed if you are doing a 100% correct resto.
4. Power feed for IGN coil, connects to positive side of coil. That wire is cloth covered and is a resistance wire. Negitive side of coil (a black wire) connects to dizzy.
What type of ignition system are you using?
thenewpappa Apr 12th, 09, 12:04 PM Greg, thanks a lot.
1) Oke so now it's totally clear. The orange wire was factory cut so I'll just leave it that way.
2&3) If this is the power feed, the TCS system has never functioned at all I guess? I'm not doing a 100% resto. For what I've read, TCS was used for emission controls. I don't plan to reuse in that case. But some wires from the TCS relay also go to the alternator. If I don't use TCS relay, what do I do with the wires? Will the kickdown still work?
4) Yes it is cloth covered. But it was connected to neg side of coil. Aint that strange?? What is the dizzy??
Ignition is the standard points style.
Wow, can somebody come overseas and gimme a help?! ;-)
undee70ss Apr 12th, 09, 3:23 PM 2&3) If this is the power feed, the TCS system has never functioned at all I guess? I'm not doing a 100% resto. For what I've read, TCS was used for emission controls. I don't plan to reuse in that case. But some wires from the TCS relay also go to the alternator. If I don't use TCS relay, what do I do with the wires?
No wires from TCS should go to alternator. The only wires that connect to alternator are the 2 small wires from voltage regulator and the large red.
Will the kickdown still work?
If it is wired correctly. It gets its power from taps on the fuse box.
http://www.chevelles.com/showroom/data/500/CWLHD.JPG
4) Yes it is cloth covered. But it was connected to neg side of coil. Aint that strange?? What is the dizzy?? Ignition is the standard points style.
Dizzy is lingo for distributer.
Elree Colby Apr 13th, 09, 11:43 AM #2 is the power feed to the kickdown switch circuit. On cars without a cowl hood the kickdown harness has a black/pink wire that connects to #2, passes through the firewall and connects to the kickdown switch. At the kickdown switch there is an orange wire that passes through the firewall and is routed to the trans.
The two wires with KICKDOWN tag, where does the black wire connect? Is it one of the soldered wires? " It goes to a soldered junction with some other black wires.'
thenewpappa Apr 13th, 09, 3:58 PM #2 is the power feed to the kickdown switch circuit. On cars without a cowl hood the kickdown harness has a black/pink wire that connects to #2, passes through the firewall and connects to the kickdown switch. At the kickdown switch there is an orange wire that passes through the firewall and is routed to the trans.
The two wires with KICKDOWN tag, where does the black wire connect? Is it one of the soldered wires? " It goes to a soldered junction with some other black wires.'
The #2 plug was not connected when I still drove the car but the kick down worked... strange? It goes to the junction you refer to, where 4 wires meet. (the car does not have the cowl flapper door)
Yes correct, the black/pink wire with KICKDOWN tag also goes to the soldered junction. The 4 wires are soldered there.
I will draw a diagram of the current situation tomorrow and post it. It's really strange... And if it is possible to delete the TCS relay, I'd like to but I need some help on the 'how to'.
Thanks for all you guys' input!
p.s. In Greg's drawing, where is the 'solenoid' located and what does it do??? Sorry for not understanding all the American words...
thenewpappa Apr 14th, 09, 7:24 AM Here is the diagram how it's connected now. Does somebody understand what was done in the past??? And of course how to fix it the correct way? (on the left is written 'male/ female spade connection')
http://i28.photobucket.com/albums/c250/thenewpappa/Geer.jpg
As you can see the black wire that goes to the TH400 is connected to the blue wire that goes to volt.reg.
The dark blue wire that goes to TCS relay is connected to white wire that goes to volt.reg.
For what I know blue and white should be connected to the alternator and volt.reg on the other end...
On the alternator itself a connection is made between the left spade and the rear connection (seen from front to back of the car). Some serious messin' around from previous owner I guess...
undee70ss Apr 14th, 09, 1:02 PM What was someone thinking wiring it like that..................
First lets verify what kind of alternator you have, and how its wired. See my posts here (http://www.chevelles.com/forums/showthread.php?t=243292) to determine what kind of alternator you have. On your current alternator, is there another wire on the small terminals?
thenewpappa Apr 14th, 09, 2:12 PM Yeah, who knows... But Greg, you're like the father of electrics? Thanks so far for helping this poor European ;-)
I've seen these posts of you. I think mine is int. regulated, see pic below. You can also see a glimp of the strange wiring like in my drawing...
http://i28.photobucket.com/albums/c250/thenewpappa/100_0129_0001.jpg
[QUOTE]On your current alternator, is there another wire on the small terminals?[\UNQUOTE]
From this pic you can see spade #2 is connected with the BAT connection on the rear side of the alternator with the thick red wire. Also on the BAT connection is the wire that leads to the splice/ junction and from there to horn relay and voltage regulator.
I'm planning on buying a new chrome or billet alternator but before doing this I want to get the wiring fixed and sort out what the best option is, internally of externally regulated. Goal: as less wires in engine bay as possible.
undee70ss Apr 14th, 09, 2:40 PM I'm planning on buying a new chrome or billet alternator but before doing this I want to get the wiring fixed and sort out what the best option is, internally of externally regulated. Goal: as less wires in engine bay as possible.
That alternator is internally regulated. Probably doesn't charge very well with no wire on spade #1. The 2 unconnected spades you are holding in the pic are not factory wires, no telling where they come from.........
For a new alternator it is best to stick with a internally regulated 3 wire as 1 wire alternators have to many disadvantages. See link http://www.madelectrical.com/electricaltech/onewire-threewire.shtml
See pic below for using a internally regulated alternator in a car that was originally used a externally regulated charging system.
http://www.chevelles.com/showroom/data/500/new_alternator_wiring_pic2.JPG
You can remove the TCS wiring as its only emissions related (unless your country requires it)
thenewpappa Apr 14th, 09, 4:04 PM The 2 unconnected spades you are holding in the pic are not factory wires, no telling where they come from.........
Those are the two connections on the left in my drawing. The guy just put 2 wires in both male plugs (no male/ female connection, sorry my mistake)
For a new alternator it is best to stick with a internally regulated 3 wire as 1 wire alternators have to many disadvantages. See link http://www.madelectrical.com/electricaltech/onewire-threewire.shtml
Yes, I've rear about them. I'll just stick to the 3-wire alternator.
You can remove the TCS wiring as its only emissions related (unless your country requires it)
No regulations as far as I know.
Just one more question, I hope I can finalize things: From the TH400, orange and black are connected one side. Orange goes to the kick down switch. Black NOW goes to TCS relay... But when I remove TCS relay, where do I lead black to?? (because the drawing in your previous post does not count when TCS relay is deleted I assume?)
| |