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Old 02-09-2018, 12:40 PM   #1
MHeffeGMC71
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No name LMC dash cluster ???

I can’t get the tack to work with my LS 6.0 swap. I called LMC to see who makes the cluster and try to find a wiring diagram but since I did not buy it from them they will not help me at all. I called New Vintage Gauge and they said it’s not one of theirs. The tack will only send a V4 signal. I have had the truck in the shop for 3 weeks now so any help you can give me would be great.
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Old 02-09-2018, 02:04 PM   #2
ls1nova71
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Re: No name LMC dash cluster ???

We need more info like what engine do you have, but i can give you some tips. Do you have it hooked to the white wire coming from the PCM that gives it a signal? For the 4 Cylinder tach signal, you will need to change the tach resolution from 6 to 3 in the tune, some sort of tuning software will be required. Also, if your PCM is newer than '03, you may need a pull up resistor to strengthen the signal enough for it to work.
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Old 02-09-2018, 02:17 PM   #3
mongocanfly
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Re: No name LMC dash cluster ???

ls1nova knows the electronics but....
just curious.. who did you buy it from and what makes you think its from lmc?
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