Just before the Deep South Cobra Club event this year where we had 32 Cobras, my Speedo started acting up. On startup the dial would swing a little bit and the ODO quit working as well. I tried to reset the guage with the pushbutton but no luck. Is there any way to test the sender in the transmission which is a TKO600.

I can send the guage to Speedhut, for repair, but I want it converted to a GPS speedo. I wonder if I get the other advantages that the GPS speedos have, such as nax speed, 0- 1/4 mile and 0-60 times.

If anyone knows the answers please advise