swap to rally guages

[Pontiacpower]

hello. I found an individual on craigslist that is selling rally gauges for 175. if I purchase this cluster would I need a new harness as well. my cluster only has speedo, fuel, and idiot lights. speedometer needle broke off and the only shop I could find that would repair it cost 250. Id rather upgrade to the rally cluster if it costs the same or less. anyone perform this swap that would shed some light on this for me? any and all help appreciated

 

[melsg5]

if it is a complete cluster for your year you will also need the senders for oil and temperature.

 

[Pontiacpower]

So do I need a different harness or do I ready have the right wires?

 

[melsg5]

I see no separate harness listed, both types of senders, oil and water, whether a gauge or a light use one wire to operate. Check the aftermarket vendors who sell new clusters such as Ames.