NMB2
Dunce
just finished it this afternoon. Not perfect, but not bad for only about an hours worth of work.
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I have to ask, is a GPS speedo like that street-legal? It certainly seems like a nice idea (and probably more accurate, for the most part, than a speedo tied to the wheels...although I would be worried about tunnels and major urban areas and such), but I have a feeling the DOT's going to want some sort of speedo tied to the wheels...its a GPS speedometer. I have a ZF S547 with my 86 rear axle, so it was the easiest way to get a speedo back.
I don't recall what the exact numbers are, but '80-'86 and '87-'97 fuel senders use different ohm readings...one's reversed in relation to the other, so if you were to hook an '87+ gauge to an earlier sender, if you got a reading at all, it would be backwards.also i was curious what fuel level gauge you bought ohm wise. I dont know if your sending unit is the same as mine but let me know what ohms full and empty you bought. I was thinking of just going this rought and setting the 5 points myself.
http://www.summitracing.com/parts/ATM-3310/
I know its not legal in texas. my bro tried to use one because we swapped a 5 speed into his truck and the teeth on the speedo gear were ate up. pulled into the inspection place a few days later and the guy said that gps speedos were not acceptable for inspection purposes. stupid thing is that we hooked up a different gear(wrong number of teeth) and took it to him the speedo showed about 40-50 mph at 25 and the guy gave us a sticker because the gauge functioned. just putting that out there in case someone is worried about it.