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Jimbug57
Samba Member
Joined: October 08, 2002
Posts: 817
Location: Mid Michigan
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 Posted: Sun Apr 11, 2021 6:03 am Post subject: Path for tach wire |
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I have my new Super Beetle dash panel done and am wiring up the tach today, weather permitting. I am unsure about getting a wire from the engine bay to behind the dash. I'm wondering if its possible to use a wire from the diagnostic port. I could get from the dash to under the back seat using the defroster relay wire, so if I could get from the diagnostic port to under the backseat that would work, all the way to the dash would be better.
I tried to search and see what others before me have done, but I'm not finding anything. What have others done? Any help or suggestion's are appreciated.
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Jimbug57
Samba Member
Joined: October 08, 2002
Posts: 817
Location: Mid Michigan
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| Posted: Sun Apr 11, 2021 6:46 am Post subject: Re: Path for tach wire |
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I should be able to go from the defroster switch behind the dash, disconnect that wire under the back seat from the relay, then there is a blue/white wire that goes from the relay to diagnostic port 5. Just a quick disco/splice under the back seat and reroute port 5 to coil negative.
Should be all good.
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Jimbug57
Samba Member
Joined: October 08, 2002
Posts: 817
Location: Mid Michigan
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| Posted: Mon Apr 12, 2021 9:48 am Post subject: Re: Path for tach wire |
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Got this done today - worked as planned.
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Nelsonpk27
Samba Member
Joined: June 30, 2019
Posts: 3
Location: Coventry England
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| Posted: Wed May 05, 2021 9:00 am Post subject: Re: Path for tach wire |
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Great job, dash looks great. I値l use your method when I fit my tach.
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Nelsonpk27
Samba Member
Joined: June 30, 2019
Posts: 3
Location: Coventry England
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| Posted: Wed May 05, 2021 9:32 am Post subject: Re: Path for tach wire |
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Great job, dash looks great. I値l use your method when I fit my tach.
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vamram 
Samba Member
Joined: March 08, 2012
Posts: 7300
Location: NOVA
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| Posted: Wed May 05, 2021 10:07 am Post subject: Re: Path for tach wire |
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| Nelsonpk27 wrote: |
Great job, dash looks great. I値l use your method when I fit my tach.
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X2, looks great. How did you wire the USB port volt reader?
_________________
Eventually, "we are what we pretend to be.樗
Give peace a chance - Stop Russian-Soviet Aggression!!
'74 Super 9/16 - present, in refurb process.
'73 Super - 6/18 - Present - Daily Driver!
'75 Super Le Grande...waiting it's turn in line behind '74.
Click to view image
Save the Supers!! |
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Jimbug57
Samba Member
Joined: October 08, 2002
Posts: 817
Location: Mid Michigan
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| Posted: Wed May 05, 2021 12:28 pm Post subject: Re: Path for tach wire |
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| vamram wrote: |
| Nelsonpk27 wrote: |
Great job, dash looks great. I値l use your method when I fit my tach.
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X2, looks great. How did you wire the USB port volt reader? |
I have it on with the ignition.
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MuzzcoVW
Samba Member
Joined: February 21, 2018
Posts: 1462
Location: Westfield, MA.
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| Posted: Fri May 07, 2021 6:29 am Post subject: Re: Path for tach wire |
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| Jimbug57 wrote: |
I should be able to go from the defroster switch behind the dash, disconnect that wire under the back seat from the relay, then there is a blue/white wire that goes from the relay to diagnostic port 5. Just a quick disco/splice under the back seat and reroute port 5 to coil negative.
Should be all good. |
That's what I'm planning to do with my '75. Might as well use some of those extra wires VW left for us with the long defunct diagnostic system! |
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vamram
Samba Member
Joined: March 08, 2012
Posts: 7300
Location: NOVA
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| Posted: Fri May 07, 2021 6:49 am Post subject: Re: Path for tach wire |
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| Jimbug57 wrote: |
| vamram wrote: |
| Nelsonpk27 wrote: |
Great job, dash looks great. I値l use your method when I fit my tach.
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X2, looks great. How did you wire the USB port volt reader? |
I have it on with the ignition. |
No issue blowing the ignition fuse? Do you have an inline fuse as well in the USB adapter?
_________________
Eventually, "we are what we pretend to be.樗
Give peace a chance - Stop Russian-Soviet Aggression!!
'74 Super 9/16 - present, in refurb process.
'73 Super - 6/18 - Present - Daily Driver!
'75 Super Le Grande...waiting it's turn in line behind '74.
Click to view image
Save the Supers!! |
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