Aftermarket speedo - do i need to use their sender?

[Bananaman]

Gday lads and ladies,

I'm thinking of getting an aftermarket speedo and tacho to go in the stock positions in my ke20 for various reasons. Autometer sell suitable ones that incidentally match my other small gauges.

The unit in question is:

http://www.modyourcar.com.au/product...roducts_id=420

Noting that theres no way i'd ever pay that much for a speedo, i'll be getting it for considerably less, don't get up in arms about $570

So, my question is regards to the speedo sensor. Do i need to use theirs, or is my stock one ok (box is from ca18det). The senders they sell specify 16 pulses per rev. Do i assume that this needs to match, or that the adjustment in the speedo can compensate for different senders with different number of pulses?

Thoughts? Anyone used one? I'm all ears for cheaper brands as well, but i do get autometer cheaply, while i might not be able to get anything better than retail on other brands.

Cheers
Bardin

[STR8 2.8]

aftermarket speedos will be able to use a huge range of pulses/rev
look up the instructions for the speedo on the autometer website and it will tell you what range of pulse/rev or km the gauge will accept

[Bananaman]

aftermarket speedos will be able to use a huge range of pulses/rev
look up the instructions for the speedo on the autometer website and it will tell you what range of pulse/rev or km the gauge will accept

Cheers mate, i'll do that now, bit of an obvious thing to try first

[Bananaman]

Can't find anything specific, but this more or less clears it up:

Now, for the connections to various vehicles. We offer two styles of senders; one for most GM and most Chrysler (PN 5291), as they both share the 7/8" - 18 THD, which will thread into the cable output on an earlier model transmission that may have used a cable previously. You would want to double check to make sure that this thread will match what you have on your transmission, to ensure compatibility. The other sender we offer is for most Ford transmissions (PN 5292) that have cable outputs, which utilize a retaining "clip" to mount the sender to the housing of the transmission. Both senders will replace the existing cable, or attach to the cable output of the transmission, to produce a signal to drive the speedometer. However, you guys with a later model transmission are saying, "Hey, I don't have a cable". Well, we've taken care of that, too. For most late model applications, our speedos can directly connect to the VSS (vehicle speed sensor) to derive the signal needed to operate, and show the vehicle speed. But, you will need to take this signal DIRECTLY from the VSS, and not from the computer, as the signal after the computer is buffered (conditioned) and our speedos will not recognize that type of signal, so the raw signal from the VSS is the wire to be connected to. Finding which wire is the signal is usually quite simple, as the signal wire will produce anywhere from 2v up to 120v DC peak to peak, so you can test for that signal with a standard multimeter (the voltage should increase with the vehicle speed). Otherwise, you can look in a service manual for the signal wire, or if you can't find it anywhere, contact us and we'll see if we have the information.

Be great if someone whos done it could pipe up though

[STR8 2.8]

from the instructions:
The speedometer is designed to operate with an electrical speed
sender. The speed senders signal pulse range must be between
500 and 400,000 pulses/mile. Any speed sender or electronic
module that meets the following two conditions can be used:
• Pulse range generated proportional to the vehicle speed
• Output within the voltage ranges listed below:
2.0 to 16V peak (Square Wave), 3 wire
2.0 to 120V peak to peak (Sine Wave), 2 wire

[oldcorollas]

why not the VDO speedos? around $300?

[TA-022]

specco new 1 is 370 !

i told em i wouldnt even pay a hooker that for the works!

[STR8 2.8]

why not the VDO speedos? around $300?

what a fantastic idea oc!
http://www.toymods.net/forums/showthread.php?t=19653

[Bananaman]

why not the VDO speedos? around $300?

what a fantastic idea oc!
http://www.toymods.net/forums/showthread.php?t=19653

Hehe saw that post already

I can get the autometer one for a bees dick more than that new, and its far more sexy / matches my other ones

Cheers for the info, i think that answers my question