Wiring in an DP Tachometer

24-08-2012, 01:12 PM

Managed to get hold of a DP Speedo/Tacho instrument panel which I'm looking to fit to my 99 M900 (carb model).
Unfortunately it didn't come with any wiring instructions, there are 3 wires exiting the rear of the tacho, BLACK, PINK and PURPLE, an educated guess says the BLACK is earth, and the PINK and PURPLE connect to each of the coil outputs (12v) to provide the firing pulses to the tacho. Can anybody confirm this is correct before I commit myself?
Thanks Guys

Zimbo · 24-08-2012, 01:36 PM

Not sure if this will be of help?

http://s71.photobucket.com/albums/i1...t=IMG_0184.jpg

http://s71.photobucket.com/albums/i1...ent=tacho1.jpg

http://s71.photobucket.com/albums/i1...rev_signal.jpg

24-08-2012, 01:44 PM

It's a start, problem is the wire colours are different from mine, the tacho I have isn't marked up as a DP tacho, it just has the CEV marking inside.

24-08-2012, 02:16 PM

Some pics of Tacho. Suppose I could substitute your wire colours for mine (from the position in the plug), that would make BROWN=BLACK, BLUE=PINK and YELLOW=PURPLE

Zimbo · 24-08-2012, 02:45 PM

Certainly looks like much the same tacho unit to me ...

I recall that, when I got mine new, it came with a bare plug and no wires at all.

24-08-2012, 03:02 PM

Yep agreed, think I'll have to suck it and see. BTW don't suppose you know where I can get a replacement plug from do you? I've tried vehicle wiring products, but they don't stock them

utopia · 24-08-2012, 04:45 PM

I was looking into doing the same a while ago (yr2000, M750).
In the end I sidetracked into fitting a gear indicator instead.
I'll have a look at some wiring diagrams this evening and see if anything rings a bell.
In the meantime, I seem to remember that the yellow wiring is for the instrument illumination lights.
I also wonder if you need a bulb holder to fit the tacho....I think I may have one knocking about. Yours for the postage, if I can find it.
Finally, with the aid of a needle or similar thin prodder, you may be able to remove the pins from your existing plug and solder replacement wires to them. Alternatively, I've used Auto Electric Supplies for odd bits in the past...they might be worth a try.

24-08-2012, 04:48 PM

Utopia, I'll take the bulb holder if you can find it cheers

24-08-2012, 01:12 PM	#1
satan916 Guest Posts: n/a	Wiring in an DP Tachometer Managed to get hold of a DP Speedo/Tacho instrument panel which I'm looking to fit to my 99 M900 (carb model). Unfortunately it didn't come with any wiring instructions, there are 3 wires exiting the rear of the tacho, BLACK, PINK and PURPLE, an educated guess says the BLACK is earth, and the PINK and PURPLE connect to each of the coil outputs (12v) to provide the firing pulses to the tacho. Can anybody confirm this is correct before I commit myself? Thanks Guys

24-08-2012, 01:44 PM	#3
satan916 Guest Posts: n/a	It's a start, problem is the wire colours are different from mine, the tacho I have isn't marked up as a DP tacho, it just has the CEV marking inside. Last edited by satan916; 24-08-2012 at 01:49 PM..

24-08-2012, 01:36 PM	#2
Zimbo Too much time on my hands member Join Date: Apr 2003 Location: Stonehouse, Glos Bike: Multiple Monsters Posts: 2,080	Not sure if this will be of help? http://s71.photobucket.com/albums/i1...t=IMG_0184.jpg http://s71.photobucket.com/albums/i1...ent=tacho1.jpg http://s71.photobucket.com/albums/i1...rev_signal.jpg

24-08-2012, 02:45 PM	#5
Zimbo Too much time on my hands member Join Date: Apr 2003 Location: Stonehouse, Glos Bike: Multiple Monsters Posts: 2,080	Certainly looks like much the same tacho unit to me ... I recall that, when I got mine new, it came with a bare plug and no wires at all.

24-08-2012, 03:02 PM	#6
satan916 Guest Posts: n/a	Yep agreed, think I'll have to suck it and see. BTW don't suppose you know where I can get a replacement plug from do you? I've tried vehicle wiring products, but they don't stock them

24-08-2012, 04:45 PM	#7
utopia No turn left unstoned Join Date: Jun 2010 Location: leicester Bike: M750 Posts: 4,546	I was looking into doing the same a while ago (yr2000, M750). In the end I sidetracked into fitting a gear indicator instead. I'll have a look at some wiring diagrams this evening and see if anything rings a bell. In the meantime, I seem to remember that the yellow wiring is for the instrument illumination lights. I also wonder if you need a bulb holder to fit the tacho....I think I may have one knocking about. Yours for the postage, if I can find it. Finally, with the aid of a needle or similar thin prodder, you may be able to remove the pins from your existing plug and solder replacement wires to them. Alternatively, I've used Auto Electric Supplies for odd bits in the past...they might be worth a try.

24-08-2012, 04:48 PM	#8
satan916 Guest Posts: n/a	Utopia, I'll take the bulb holder if you can find it cheers