Got the kit from SAV and installed it today. Just want to verify a few things I did.
The negative side of the coil is the one that goes to the base of the distributor (green wire inside), right?
Was there supposed to be 2 rings with the dash adapter? I got one ring, but there's still no way to secure the tach to the dash.
Were your dip switch settings correct? When I set them as directed in the instructions, the reading was way off. Then I looked at the graph and it lists them in reverse order 3-2-1. For 4 cylinders it says 3-on 2-off 1-off. I thought it was odd they had the numbers reversed on the directions, so I reversed the settings: 1-on 2-off 3-off. That seems to give a reasonable reading. I don't have another tach to verify, though.
How did you do yours?
SAV Tach Kit Installed, Q's for those that have done it.
Moderator: TechMOGogy
Well I must have it on the right setting none of the others are even close. It shows I'm idling at about 1100 RPM which sounds about right since it's a little faster than it was before.
At higher RPM it's about useless, needle bounces all over. Pretty disappointed in that purchase. Oh well.
At higher RPM it's about useless, needle bounces all over. Pretty disappointed in that purchase. Oh well.
1973 712M
Mine VDO tach behaves similar. At higher revs sometimes it bounces within the range 300-500 rpm. I'am not bothering myself about that. It gives me enough clue about engine rpm, which would otherwise be pure guess because of the transmission noise.
Welcome in the club.
Roman
Welcome in the club.
Roman
1976- 710 M + 1976- 710MS
sav TACH
You are in a very special club.
When I got mine from SAV it did just as yours does. RPM was high and it 'floated' all over at running RPM. Got to the point that at idle it was reading 6000rpm.
Now for the fun part. Do you have Petronix? Where are you taking the power from? The power can come from the key switch but I took mine from the battery side of the wire to the starter. Mostly because I have extra lights on the pinz running through a fusebox at the firewall, so it was easier for me to do that and get pure voltage.
Also, the wiring can be confusing a little.
I did get a wiring diagram and step by step photos of the installation from a friend in Canada that I can PM to you. I am not a wire wizard so these were very helpful to me. He did a great job on his installation and shared it with me.
Cheers,
Morris 710M
When I got mine from SAV it did just as yours does. RPM was high and it 'floated' all over at running RPM. Got to the point that at idle it was reading 6000rpm.
Now for the fun part. Do you have Petronix? Where are you taking the power from? The power can come from the key switch but I took mine from the battery side of the wire to the starter. Mostly because I have extra lights on the pinz running through a fusebox at the firewall, so it was easier for me to do that and get pure voltage.
Also, the wiring can be confusing a little.
I did get a wiring diagram and step by step photos of the installation from a friend in Canada that I can PM to you. I am not a wire wizard so these were very helpful to me. He did a great job on his installation and shared it with me.
Cheers,
Morris 710M
-
pinzinator
- Posts: 935
- Joined: Thu Jul 29, 2004 3:12 pm
- Location: Indio, California
Do have the pertronix installed. Took the 24v off the #12 breaker.
Krick3tt, I'ld appreciate that info if you want to email it to me at tstanyon@msn.com.
Not really pleased with the purchase at this point. More of an expensive dash decoration more than anything.
Krick3tt, I'ld appreciate that info if you want to email it to me at tstanyon@msn.com.
Not really pleased with the purchase at this point. More of an expensive dash decoration more than anything.
1973 712M
I contacted VDO tech support. They are going to get back with me. I'll post up what they have to say.
I took out my 4500 RPM module and cleaned up the contacts. Looked over the internals and don't see anything obvious. It's still not working that I can tell. It does give the test flash when I turn on the key. I'm going to trace the other leads to if and see it theres a bad connection somewhere. That's why I wanted the tach in the first place. My engine really screams coming down the Teton Pass. It's a 10% grade and I use lower gear, of course, to save the brakes.
I took out my 4500 RPM module and cleaned up the contacts. Looked over the internals and don't see anything obvious. It's still not working that I can tell. It does give the test flash when I turn on the key. I'm going to trace the other leads to if and see it theres a bad connection somewhere. That's why I wanted the tach in the first place. My engine really screams coming down the Teton Pass. It's a 10% grade and I use lower gear, of course, to save the brakes.
1973 712M
Morris if you could send me that diagram as well, miles_conklin@hotmail.com
I still have to wire mine in after the restoration of the frame and body.
Miles
I still have to wire mine in after the restoration of the frame and body.
Miles
Lots of Pinz pictures here.......
http://picasaweb.google.com/pinzgauer.depository.1
'73 Pinzgauer 712M
http://picasaweb.google.com/pinzgauer.depository.1
'73 Pinzgauer 712M
There was an elaboration of the Tacho issue, on the German Pinzgauer forum.
Behaviour of the signal from contact points was tested on the osciloscope. Multiple peaks were found for each ignition sequence at higher rpm. Hence the erratic behaviour of the tachos.
Suggested solution by a german electronic expert was to filter out excessive peaks by including a 8000 ohm resistor in line between the contact points and signal terminal on the tacho. Next to this, the signal terminal on the tacho must be grounded across a 2000 ohm resistor. According to report, the solution was succesfully tested and proved that tacho operates perfect across a whole range.
Roman
Behaviour of the signal from contact points was tested on the osciloscope. Multiple peaks were found for each ignition sequence at higher rpm. Hence the erratic behaviour of the tachos.
Suggested solution by a german electronic expert was to filter out excessive peaks by including a 8000 ohm resistor in line between the contact points and signal terminal on the tacho. Next to this, the signal terminal on the tacho must be grounded across a 2000 ohm resistor. According to report, the solution was succesfully tested and proved that tacho operates perfect across a whole range.
Roman
1976- 710 M + 1976- 710MS
Excellent info, thanks.Roman wrote:There was an elaboration of the Tacho issue, on the German Pinzgauer forum.
Behaviour of the signal from contact points was tested on the osciloscope. Multiple peaks were found for each ignition sequence at higher rpm. Hence the erratic behaviour of the tachos.
Suggested solution by a german electronic expert was to filter out excessive peaks by including a 8000 ohm resistor in line between the contact points and signal terminal on the tacho. Next to this, the signal terminal on the tacho must be grounded across a 2000 ohm resistor. According to report, the solution was succesfully tested and proved that tacho operates perfect across a whole range.
Roman
1973 712M