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pbajwabb Samba Member
Joined: April 03, 2007 Posts: 582
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Posted: Thu May 22, 2008 12:06 pm Post subject: Installing a Tach |
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How hard is this? Do they come with instructions as to where the wires hook up? _________________ 1968
1969
1971
1965- Purchased Jan 2013 and ready to start the processes again |
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Randy in Maine Samba Member
Joined: August 03, 2003 Posts: 34890 Location: The Beach
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Posted: Thu May 22, 2008 12:18 pm Post subject: |
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The "sending unit" just goes on the green points wire. |
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Cusser Samba Member
Joined: October 02, 2006 Posts: 31380 Location: Hot Arizona
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Posted: Thu May 22, 2008 12:24 pm Post subject: |
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Need hole in dash/grille. One wire back from trunk/tach to coil negative side as posted above (I routed mine under the VW running board). One wire to ignition switch "hot" circuit. One wire to dashboard light circuit, and one to ground.
_________________ 1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
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ajcool930 Samba Member
Joined: May 21, 2008 Posts: 108 Location: allentown, pa
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Posted: Thu May 22, 2008 12:24 pm Post subject: |
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i installed a cheap little sunpro $25 tach and it was pretty easy.
the tach needs to go to a positive wire,anyone that is on when you turn on the key. it also needs to go to the negative side of the coil, this is the hardest part, because ther is no substitution for running a wire back to the coil. andthe tach will have a light in it most likely, and you just need to splice it into a wire that goes to the head light and ground it.
as for mounting it, thts up to you. i took out the metel panel to the left of the speedo and cut one out in the same shape with the prongs to mount it( so i didnt damage the original one) and mounted the tach to it so i could see it. i have also seen them mounted under the ashtray and above the stereo. |
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Executivelevel Samba Member
Joined: May 21, 2008 Posts: 12 Location: Detroit, Michigan
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Posted: Thu May 22, 2008 12:42 pm Post subject: |
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If I remember correctly, mine came with pretty detailed instructions, yours should too if you buy it new.
good luck. |
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ajcool930 Samba Member
Joined: May 21, 2008 Posts: 108 Location: allentown, pa
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Posted: Thu May 22, 2008 12:44 pm Post subject: |
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whats that vent above the speedo, my '70 doesnt have one, should it? |
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Randy in Maine Samba Member
Joined: August 03, 2003 Posts: 34890 Location: The Beach
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Cusser Samba Member
Joined: October 02, 2006 Posts: 31380 Location: Hot Arizona
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70bugken Samba Member
Joined: November 20, 2007 Posts: 154 Location: Riverside, Illinois
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Posted: Thu May 22, 2008 6:11 pm Post subject: |
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ajcool930 wrote: |
whats that vent above the speedo, my '70 doesnt have one, should it? |
Wow that's weird. My '70 has that little vent, but nothing "feeding" it. I think the P.O. must have replaced the padded dash pad with the wrong one. |
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Joel Samba Member
Joined: September 04, 2006 Posts: 11099 Location: NSW Australia
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Posted: Thu May 22, 2008 6:35 pm Post subject: |
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if u have a 72 on beetle with the diagnosis plug on the firewall u can use those wires for gauges cos afew of its wires run from the engine bay into the cabin under the backseat
bugken if u can just see metal dashboard behind it then yea its a later model dash pad
i had a 12/70 1500 parts beetle that was the first model in aus to get those vents but it didnt have the outside plastic ones behind each back window but we were pretty slow getting alot of upgrades in aus
US might have got them alot earlier _________________ Quick little bug, you got a Porsche motor in that?
1974 Germanlook 1303 2.5 Suba-Beetle |
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jamesdagg Samba Member
Joined: August 18, 2007 Posts: 3364 Location: B.C.Canada
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Posted: Thu May 22, 2008 8:30 pm Post subject: |
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Cusser> That dash needs a little soap and water.
jim _________________ '72 FI Westy
'71 Super rear inside defrost vents no longer available |
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BillTard Samba Member
Joined: April 30, 2008 Posts: 43 Location: Muskegon MI
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Posted: Fri May 23, 2008 10:21 am Post subject: |
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I was wanting to install a tach, can you just pick up any tach say from autozone or do you need to mod/hack stuff to get it to work. i have a 1976 bug. as stated in my other posts i'm new to the whole car rebuild/restore so is there a guide or instructions on how to install a tach?
----------------
Now playing: Tool - Tool--Aenima
via FoxyTunes |
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Randy in Maine Samba Member
Joined: August 03, 2003 Posts: 34890 Location: The Beach
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Cusser Samba Member
Joined: October 02, 2006 Posts: 31380 Location: Hot Arizona
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neil68 Samba Member
Joined: March 17, 2007 Posts: 3440 Location: Calgary, Canada
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Posted: Fri May 23, 2008 1:58 pm Post subject: tach mount |
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I have a tach mounted under my ashtray using a VDO tach and matching mount. This was so that I could keep my radio speaker intact and use oil temperature and oil pressure gauges on the right side (of the speedometer grill) _________________ Neil.
Der Kleiner Rennwagens
68 Beetle 2332 cc, 204 WHP
12.5 seconds @ 107 mph
Dynojet Test: https://www.youtube.com/watch?v=M9B_H3eklAo
Last edited by neil68 on Fri May 23, 2008 5:52 pm; edited 1 time in total |
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pbajwabb Samba Member
Joined: April 03, 2007 Posts: 582
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Posted: Fri May 23, 2008 4:40 pm Post subject: |
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So did you guys run the wire that goes to the coil thru the inside of the car? Or did you run it under the car? Also, where would be a good place to run this wire, It looks impossible to get it to go through where the batter/regulator wires connect to the engine _________________ 1968
1969
1971
1965- Purchased Jan 2013 and ready to start the processes again |
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Joel Samba Member
Joined: September 04, 2006 Posts: 11099 Location: NSW Australia
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Posted: Fri May 23, 2008 5:28 pm Post subject: |
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its not to hard to run a wire thro the quarter panel cavity
i certainly would never run it under the car
if the wire rubs thro anywhere and touches the anything metal the car will die and will be a nightmare to sort on the side of the road
and this is a likely scenario given the wire insulation would go hard and crack given time when out in the elements
ive used up all my engine diagnonis wires and had to run extras tho the cavity
its not hard my bug was full of foam there too which made it tricky to gouge it all out but u just need to feed a snake thro there
ive got a drain cleaner snake thing that works like a charm
just tape the wires to it and feed thro from the engine bay into the cavity behind the rear door panels
Hth
-Joel _________________ Quick little bug, you got a Porsche motor in that?
1974 Germanlook 1303 2.5 Suba-Beetle |
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2002sportside Samba Member
Joined: January 27, 2004 Posts: 1489 Location: New England
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Posted: Fri May 23, 2008 5:43 pm Post subject: |
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Running the wires through the car is not that hard. All you have to do is follow the harness VW ran from front to back originally. You will need a snake or coat hanger to pass from passenger to engine compartment. While you're running one wire, run a couple extra for the gauges you don't even know you want yet. Much easier to do it all at once than have to do it again later. _________________ 1973 Volkswagen Beetle never ending project |
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Cusser Samba Member
Joined: October 02, 2006 Posts: 31380 Location: Hot Arizona
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Posted: Fri May 23, 2008 8:19 pm Post subject: |
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My wires for oil temperature, tach, and oil pressure gauge all run from trunk out through grommet, under the driver's side running board, then underneath and up as necessary. Cable ties are a good thing. Mine have had this wiring since 1976, no issues. _________________ 1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
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delliott101 Samba Member
Joined: February 22, 2008 Posts: 1315 Location: Caldwell - Lake Lowell ID
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Posted: Sat May 24, 2008 7:58 am Post subject: |
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No problem for me if I want to install one... everything is ripped out of my Bug right now so I can restore it! |
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