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THINGONER
Samba Member
Joined: April 13, 2008
Posts: 674
Location: riverside ca
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 Posted: Thu Oct 15, 2009 5:43 pm Post subject: VDO gauge wiring |
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| Is it ok to run a jumper wire for the VDO gauge wires? Keyed hot & hot wire for gauge light? I just can"t see running three seperate wires. Thanks. |
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germansupplyscott
Samba Member
Joined: May 22, 2004
Posts: 7093
Location: toronto
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| Posted: Thu Oct 15, 2009 6:32 pm Post subject: |
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it's fine to make the hot and ground wires a daisy chain, yes.
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sturgeongeneral
Samba Member
Joined: June 23, 2005
Posts: 2460
Location: Sacramento, California
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| Posted: Thu Oct 15, 2009 10:09 pm Post subject: |
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That is perfectly acceptable.
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kubelmann
Samba Member
Joined: April 13, 2003
Posts: 3266
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| Posted: Fri Oct 16, 2009 7:03 am Post subject: |
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| On a Thing I always use the old diagnostic wires to go from the engine into the car interior when wiring gauges. Already part of the loom and oe wire besides. Very clean looking. |
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THINGONER
Samba Member
Joined: April 13, 2008
Posts: 674
Location: riverside ca
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| Posted: Fri Oct 16, 2009 9:00 am Post subject: |
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| Thank you! |
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DougD
Samba Member
Joined: October 11, 2011
Posts: 334
Location: Auburn, WA
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| Posted: Wed Apr 18, 2012 5:04 pm Post subject: |
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Were would one find these diagnostic wires? I happen to have picked up a few gauges that need wired  |
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Captain Spalding
Samba Member
Joined: February 19, 2005
Posts: 2519
Location: . . . in denial.
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| Posted: Wed Apr 18, 2012 5:42 pm Post subject: |
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| DougD wrote: |
| Were would one find these diagnostic wires? I happen to have picked up a few gauges that need wired |
I'm curious too. What diagnostic wires run from the engine compartment up to the instrument panel? |
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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3510
Location: Indiana
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DougD
Samba Member
Joined: October 11, 2011
Posts: 334
Location: Auburn, WA
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| Posted: Wed Apr 18, 2012 7:15 pm Post subject: |
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| Thanks for the heads up Semper... guess I'll just run new ones back there. |
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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3510
Location: Indiana
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| Posted: Wed Apr 18, 2012 7:56 pm Post subject: |
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I just finished installing a series of gauges on my dash. I also have all the Ts and sensors.
Cylinder Head Temp (CHT)
Oil Pressure
Oil Temp
Tach
Voltage
None of then functional at the moment. I'm taking my time to build a dedicated harness. CHT came with it's own wire harness. The plan is to add the additional wires and encase the whole the bundle into a casing similar to the OEM main harness.
Thinking about running the harness along the passenger side. May have to punch a new hole next to the main harness to get the wires into the engine compartment.
By my count I'll need a bundle of 6 wires. Correct me if I'm wrong.
2 for the CHT
1 For the Oil Temp
1 for the Oil Pressure
1 for the tach
0 for the Volt. I'll tap off the fuse panel)
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Captain Spalding
Samba Member
Joined: February 19, 2005
Posts: 2519
Location: . . . in denial.
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| Posted: Wed Apr 18, 2012 8:15 pm Post subject: |
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| Semper_Dad wrote: |
By my count I'll need a bundle of 6 wires. Correct me if I'm wrong.
2 for the CHT
1 For the Oil Temp
1 for the Oil Pressure
1 for the tach
0 for the Volt. I'll tap off the fuse panel) |
That sounds about right. I would recommend Cat 5 cable. 8 conductors in a compact package. If you look around you can find it in a black sheath rather than the ubiquitous blue.
BTW, for the gauge lights, you can jumper off of terminal 58b on the light switch. There's a gray/red wire there that feeds the other instrument lights. |
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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3510
Location: Indiana
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| Posted: Wed Apr 18, 2012 8:39 pm Post subject: |
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| Captain Spalding wrote: |
That sounds about right. I would recommend Cat 5 cable. 8 conductors in a compact package. If you look around you can find it in a black sheath rather than the ubiquitous blue.
BTW, for the gauge lights, you can jumper off of terminal 58b on the light switch. There's a gray/red wire there that feeds the other instrument lights. |
I'm a bit apprehensive about using a solid core wire in an automotive application. I would think it would be too prone to breakage. I suppose that's not too important with intrumentation. Just hate hunting down electrical gremlins. Install directions call for minimum 16 GA wire. CAT5 typically uses 24-26GA wire. I do have quite a bit of CAT5 leftover from when I wired my house.
I now have the extra fuse panel that I've brought over lighting, +B(30) , and 15 to the panel.
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GI Joe
Samba Member
Joined: April 28, 2005
Posts: 2012
Location: Athens, TN
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| Posted: Thu Apr 19, 2012 7:33 am Post subject: |
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Semper,
I used 4 wire trailer wiring for my additional guages, and heat booster switch. I know there are 7 wire setups, not sure if you can find an 8 wire though.... Nice to only have to run one "wire" from front to rear, instead of 8 individuals....
Just a thought!
Hey, just realized, you could do 2 runs of the 4 wire and get your eight!!
Carry on!
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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3510
Location: Indiana
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| Posted: Thu Apr 19, 2012 7:44 am Post subject: |
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I think I'm just being too anal about all this. I want to use distinctively different color coded wire for my harness all wrapped in a OEM like sheath. If the diag wires were longer I'd use them for the sensor wires. I've gleened enough brown, black and grey/red wire out of old cars for the grounds, 15, and lighting circuits . Kinda wanted to go with a "what would the factory have done" point of view.
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DougD
Samba Member
Joined: October 11, 2011
Posts: 334
Location: Auburn, WA
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| Posted: Thu Apr 19, 2012 1:29 pm Post subject: |
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| Does anyone happen to have a picture of the wire that runs below the engine area to the temperature sensor in their oil drain plug? I am not quite clear on how this should run... Thanks! |
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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3510
Location: Indiana
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| Posted: Thu Apr 19, 2012 3:00 pm Post subject: |
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| DougD wrote: |
| Does anyone happen to have a picture of the wire that runs below the engine area to the temperature sensor in their oil drain plug? I am not quite clear on how this should run... Thanks! |
Don't think there's any "correct" way to run it. Just fix it so it doesn't fall down and catch anything you drive over.
Better yet, you may want to consider using a "T" on the current oil pressure location. People argue which is the better location but it's pretty much pOtatO v pAtAto to me. I first bought the oil plug sensor but was convinced later to use the oil pressure site.
Hey, BTW,....you going to SpringMeet or Cruise for the Cure?
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DougD
Samba Member
Joined: October 11, 2011
Posts: 334
Location: Auburn, WA
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| Posted: Thu Apr 19, 2012 3:40 pm Post subject: |
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Im going to try and make it to both. Do you have to buy tickets for either?
I think on the mount I'm going to mount a disconnect point near the engine so if it does catch on something it wont rip the line out all the way back. I have all the gauges mounted but there not quite as fun when the needles don't go anywere... |
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DougD
Samba Member
Joined: October 11, 2011
Posts: 334
Location: Auburn, WA
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| Posted: Thu Apr 19, 2012 6:35 pm Post subject: |
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| Can anyone tell me which fuse/circuit I should connect the power and control wire to for the two gauges? I've poured over the diagrams and I think I have it figured out but if I'm still a little worried I'll do it wrong and set my Thing on fire... and god knows that would suck. |
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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3510
Location: Indiana
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| Posted: Thu Apr 19, 2012 6:57 pm Post subject: |
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| DougD wrote: |
| Can anyone tell me which fuse/circuit I should connect the power and control wire to for the two gauges? I've poured over the diagrams and I think I have it figured out but if I'm still a little worried I'll do it wrong and set my Thing on fire... and god knows that would suck. |
Not sure what you mean by "control" wire. Power to be connected to a 15 circuit. Normally a black wire. Fuses 1 or 2 will work. That way it isn't energized unless the car is "on". Make sure you hook it up on the fused (output) side
Connect one side of the light bulb to the cars instrument lighting circuit (58b) (Grey/red wire). Other side of lightbulb to ground.
Do one circuit at a time if feel unsure of yourself
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DougD
Samba Member
Joined: October 11, 2011
Posts: 334
Location: Auburn, WA
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| Posted: Thu Apr 19, 2012 7:35 pm Post subject: |
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| Thanks Semper! Lets see if I can get these to work... |
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