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| Re: Unknown wire [message #236433 is a reply to message #236412] |
Fri, 17 January 2014 17:01   |
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Richard Andis
Messages: 261
Registered: January 2013
Location: HELL Paso, TX
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Unfortunately, the pictures are so in tight I can't even tell you what END of the coach you're looking at. I can't even figure out a reference point.
10Amp Ignition buss that feeds gauges and transmission circuitry.
Valhalla - 1978 GMC Royale rear twin [SOLD]
Walküre - 1974 VW Thing (Toad)
[Updated on: Fri, 17 January 2014 17:08] Report message to a moderator |
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| Re: Unknown wire [message #236515 is a reply to message #236513] |
Sat, 18 January 2014 11:59 |
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Richard Andis
Messages: 261
Registered: January 2013
Location: HELL Paso, TX
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Senior Member |
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Pink Double Blk Stripe comes off the 10A ignition (ON) buss from the fuse panel. Should be hot when key is in "On" position (not start)
Feeds the following:
1. Transmission - Downshift Solenoid
2. Fuel Main/Aux Switch
3. Power for your Gauge cluster
4. Low fuel switch module
Are you having any problems with any of the above?
Valhalla - 1978 GMC Royale rear twin [SOLD]
Walküre - 1974 VW Thing (Toad)
[Updated on: Sat, 18 January 2014 12:02] Report message to a moderator |
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| Re: [GMCnet] Unknown wire [message #236758 is a reply to message #236683] |
Mon, 20 January 2014 15:12 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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I got out the handy-dandy enlarged schematic diagrams for my 76 to have a peek.
There is a #12 AWG pink wire from the IGN-1 terminal of the ignition switch that leads to the IGN BUS BAR.
IGN BUS BAR shows two outputs:
1) A 20A fuse (maybe breaker) to a DK GRN #16 AWG wire (BACKUP - CRUISE) that feeds to the NEUT START, BU, and SAFETY SW
2) A 10A fuse (maybe breaker) to a PINK + DBL BLK #18 AWG wire for GAUGES - TRAN. The latter feeds DOWN-SHIFT SOLENOID, LOW FUEL SW, Instrument Cluster (IGN), and FUEL TANK SELECTOR SW.
I don't know where the IGN BUS BAR is located but I suspect is behind the instrument panel somewhere because it feeds all the wires leading to both fuses.
I also believe it is highly likely that another #12 PINK wire from the IGN BUS BAR is the feed point for the distributor (changes somewhere to a pair of #18 BLK w/ DBL WHT tracer) wires AND a #18 PINK wire leading to the SOLENOID ENG THROTTLE STOP relay.
I hope this helps in tracing out the greatly mysterious PINK w/ DBL BLK tracer wire! I think I have found all routing for this wire.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
*[ ]~~~[][ ][|\
*--OO--[]---O-*
> To: gmclist@temp.gmcnet.org
> From: cbwoodsr@swbell.net
> Date: Sun, 19 Jan 2014 19:17:14 -0600
> Subject: Re: [GMCnet] Unknown wire
>
>
>
> ummm....no, fuse panel is inside, this is outside, front passenger side access door, main bunch of wires coming out of the front dash, out the top area and goes to ????. Right beside the fan for the htr/ac. nothing near has an empty connector that I can see but it has togo to something near there. wiring diagrams don't help, this is physical.
>
> thankx
> CBW
> --
> CBWood
> 77 Kingslay
> MWC OK
> ONLINE PARTS PROGRAM
> http://cbwoodsr.no-ip.org/GMCParts/index.asp
>
>
> _______________________________________________
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| Re: Unknown wire [message #236773 is a reply to message #236412] |
Mon, 20 January 2014 16:29 |
Hoosier
Messages: 20
Registered: May 2008
Location: Roxboro, NC
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Junior Member |
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Does anybody know where this wire physically goes to??
Charles, My '76 Transmode has that wire hanging also. It is located near the horn relay with a plastic terminal housing & connector that would slide on a button type terminal. There is no voltage on the wire with ignition on, off, or just key in ignition.
The wiring diagram shows it as 18ga pink with double black stripe coming from the ignition switch. It is shown as connected to a 20ga Black with double pink tracers at BT that comes from terminal 4 on the horn relay. To the right of that is the KEY BUZZER switch. My coach does not have a buzzer that works and I can't find one. In addition; the 20ga Black with double pink does not exist. Only wires on the horn relay are the two 12ga red with black 16ga fusible link all mounted on the stud and a 16ga black on #2 and 16ga dk green on #3 going to the horns. Metering with spare wire from the connector on the steering column to the end of the wire in question proves it comes from PIN E of the column connector and is unused on my coach. Metering the BUZZER Switch in the column indicated the switch was open or non-existant. Some one may be able to clarify if the key buzzer was an option or not. Please use maintenance manual page 9-51, fig 68 for connector reference.
RayBechtel
Roxboro, NC
1976 Royale
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| Re: [GMCnet] Unknown wire [message #236851 is a reply to message #236773] |
Tue, 21 January 2014 01:12 |
Rivers
Messages: 25
Registered: October 2009
Karma: 0
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Junior Member |
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Ray that wire comes off 10 amp fuse goes to a conn. of 4 other wires same color.
these in turn go to fuel selector, trans sw, low fuel sw, and 8 way printed circut conn.
hope this helps
Rivers
77 ele
On Monday, January 20, 2014 2:36 PM, Ray Bechtel <rbechtel@esinc.net> wrote:
Does anybody know where this wire physically goes to??
Charles, My '76 Transmode has that wire hanging also. It is located near the horn relay with a plastic terminal housing & connector that would slide on a button type terminal. There is no voltage on the wire with ignition on, off, or just key in ignition.
The wiring diagram shows it as 18ga pink with double black stripe coming from the ignition switch. It is shown as connected to a 20ga Black with double pink tracers at BT that comes from terminal 4 on the horn relay. To the right of that is the KEY BUZZER switch. My coach does not have a buzzer that works and I can't find one. In addition; the 20ga Black with double pink does not exist. Only wires on the horn relay are the two 12ga red with black 16ga fusible link all mounted on the stud and a 16ga black on #2 and 16ga dk green on #3 going to the horns. Metering with spare wire from the connector on the steering column to the end of the wire in question proves it comes from PIN E of the column connector and is unused on my coach. Metering the BUZZER Switch in the column indicated the switch was open or non-existant. Some one may be able to clarify if the key buzzer was an option or not. Please use maintenance manual page 9-51, fig 68 for connector
reference.
--
Ray & Jan Bechtel
Roxboro, NC
1976 Royale
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| Re: [GMCnet] Unknown wire [message #237100 is a reply to message #236870] |
Wed, 22 January 2014 22:26 |
Emery Stora
Messages: 959
Registered: January 2011
Karma: 4
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Senior Member |
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I checked mine and see that it comes out of the topmost right side of the fuse block that protrudes through the firewall. On my motor home it goes down into a large wire bundle covered by a plastic cover.
If you have the wiring diagram you will find it opposite the Legend "Transmission Control"
It is connected to the ignition bus bar which means it is only hot when the key is on. It comes from a 10 amp fuse labeled Gauges Tran. It then splits into 4 wires. One goes to the transmission switch for the transmission kickdown. Another goes to the Main/Aux fuel tank switch. Another goes to your instrument cluster. Another goes to your low fuel sender.
Do you know if these all work? If the break is before the wire splits into 4 wires then none should work right.
Emery
On Jan 21, 2014, at 7:30 AM, Charles Wood <cbwoodsr@swbell.net> wrote:
>
>
> guys...
> referencing the wiring diagram doesnt help any..
> sorry about the confusion BUT, probably someone with a 77 kingsley would need to physically look on his/her coach to physically locate and physically trace this wire and see: 1- is it hooked to anything; 2- what is it physically hooked to.
>
> Thankx for the help so far...
>
> CBW
> --
> CBWood
> 77 Kingslay
> MWC OK
> ONLINE PARTS PROGRAM
> http://cbwoodsr.no-ip.org/GMCParts/index.asp
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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