er um.........dont tachos pick up from neg of coil ./??????
mark k `YEARS AGO I COULDNT SPELL COMPWUTER PWOGWAMMER, NOW I ARE ONE.....` ----- Original Message ----- From: "Terry Rudd" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, July 12, 2004 7:38 PM Subject: RE: Datsun factory tacho > Mark, > > Here is an old post with instructions to wire up a factory tacho. There are > a few different wiring colours for the other than white wires but these > instructions tell you how to wire it up regardless of the colours and which > white wire goes where. > > Here is how you wire the impulse inductive pickup type of tacho into a 1600. > The 2 white wires connect into the positive coil loom wires and the other 2 > wires in the centre of the tacho are for 12v battery power and earth. Don't > be tempted to splice into the ignition circuit behind the dash unless you > can see a pigtail wire that's usually got heaps of insulation tape wrapped > around it. The impulse wires must be wired into the loom as close to the > coil as possible but I've found that not all 1600's are wired like this. > The 1600 SSS wiring loom is different from the Deluxe/GL etc as it caters > for the coil circuit to have this type of tacho. Some models circa 1971/72 > actually have the wires to the coil already in the loom with a pigtail > connector that's removable and allows you to simply remove the pigtail > wire and plug in the white tacho wires. > > If you have to add the impulse wires then here are step by step > instructions. > You will need some male & female spade connectors and 2 wires long enough to > go from the white wires on the tacho when fitted into the dash to the coil. > I > use what's called figure 8 wire for the coil and good quality speaker wire > will do and if you're lucky one of the wires will have a stripe which is > useful. > > Connecting it up. > I usually connect up the tacho to check that it's working correctly before > fitting into the dash - it's easier to trouble shoot that way. > > Remove the loom wire from the positive side of the coil. Connect one of the > wires of the F8 wire to the positive coil terminal (I use the solid colour > on speaker wire for positive coil terminal with female spade connector) and > connect the other side of the F8 wire (striped with male spade connector) to > the positive coil wire in the loom that you just pulled from the coil. > > Look at the tacho from the back. The 2 white wires loop through the plate > vertically. Fit a female spade connector to the bottom wire and a male spade > connector to the top wire. The white wire at the bottom goes to the positive > side of the coil so connect it to the other end of the F8 wire with solid > colour. The white wire on top goes to the existing wire in the 1600 loom > that > was on the positive terminal of the coil. > > Now for the other wires i.e. +12v battery and Earth. > Look at the back of the tacho again with the white loop wires at the bottom > of the tacho. > You'll see a small circuit board down the hole, one wire will go through the > board and disappear and the other wire turns right above the board and also > disappears. The wire that goes though the hole in the board is the Negative > and therefore the other wire is the Positive. > > Some 1600 tacho of this type have two external plug in connectors in the > housing for lighting. Some 1600 looms have the plug that you can just > connect into the dash lighting circuit and on the loom side it is a 3 pin > female connector. The colours loom side to the connector are Green/red, > Green/black and Black. If your car hasn't got the connector then it's pretty > easy to just splice into another light circuit, the green wires on the tacho > plugs are positive and the black wire that are joined together are the > negatives. > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Mark > Sent: Sunday, 11 July 2004 11:04 PM > To: [EMAIL PROTECTED] > Subject: Datsun factory tacho > > > I have a Datsun tacho I'd like to check, which I guess will need +12v, > gnd and negative signal from coil at a minimum. > The wires on the back are: white (male), white (f), black and green. I > thinking black ->gnd, green->12v. > > Mark. > > > > > > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ ---------------------------------------------------------------------
