I've got an older Dixco tach that has two wires coming out the back. The Sun tach thats on my pickup now has 4 wires. I want to take the plastic Sun tach out and put in the Dixco. From looking at another Dixco that I've got thats apart, it looks like the white wire goes to the bulb so this wire should go to the fuse box, correct? The green wire would go to the coil? Which side? Sorry for the probably stupid question but electronics isn't my game at all. Thanks for any help!!
Dont have a clue, as I said, electronics isn't my bag at all. What kind of box are you talking about? I did wire it up similar to the way the Sun was wired, the light works but nothing on the needle so I've either got a bad tach or its missing this "box" that you speak of.
Well I tried a second Dixco that I had and wired it with the tach lead to the neg. side of the coil like I did the first one and it didn't work either. All the wiring seems to be intact on the inside. I did notice on a third Dixco that it had 3 wires coming out, a black a white and a green. These first two that I tried didn't have the black. It does say on a tag inside the tach that if your using it for something other then an 8 cyl. that you need to remove the red resistor and upon looking at the tach that had the black wire still attached, it was soldered to what looked to be a red resistor so my guess is that these other two tachs just had the black wire removed which would in effect remove the red resistor right? Now my next question, if you hook up one of these tachs on a 8 cyl. thats had the black wire removed will it still register but just not correctly? And if you hook up the one that has all three wires intact, do both the black and green go to the neg. side of the coil or do you just hook up the black wire instead of the green?
I have a Dixco tach that I haven't hooked up as I usually use Sun tachs. The Dixco tachs are transistorized and don't need a transmitter box such as the early Sun tachs used. There are three resistors soldered between the two poles in the middle of the tach back; a red one, a blue one, and a brown one with red stripes. The tag sez remove the red one if you are running a six cyl and also remove the blue one if you are running a four cyl. They are not attached to any wires, at least not on the back side of the tach. There are three wires coming out the back; black, red, and green. The red one appears unused and goes to the light socket. The green shud go to the distributor side of the coil and the black to the ignition switch. If you want to hook up the light, I'd attach it to the light switch so that it is only on when the lights are on.
Not sure what model number yours is but mine are as follows: a 47, a 48 and two more that are unreadable but they look identical to the others. One thing that I may have done wrong or misspoke about was that the directions on the little model tag said to remove the red resistor if using on a 6 cyl and thats how I hooked it up on my V-8. Should I have ran both the green and black wire(that connected to the red resistor) to the neg. side of the coil and the white wire to the power source?
Anyone know where to buy the three resistors? I'm short one and not v good with the color coding. Putting mine on a straight six, thx for any help
I had two of 'em. No box needed. One wire to switched hot for light an one to coil and I thought there was another wire????? Maybe not...
Didn't mean the wires Joe, but the resistors soldered on the back of the tach. 8 cyl – 3 resistors connected red, blue & brown 6 cyl – remove only red resistor leave blue & brown connected 4 cyl – remove red and blue resistor leave brown connected I'm no good on the color thing so don't know what I'm shopping for - all the resistors I'm seeing have multiple bands of color on them and it's making my head hurt
I have a 3 wire dixco 97 tach. I have V8 with points ignition. After much fooling around with this tach. I found it works with the green wire to the coil, the black wire to hot on ign. white wire to ground,and both the resistors removed. You could hook up another wire to the lights if you didn,t want the light on all the time. I hope this helps.
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