The first harness I had from BBC also didn't work for the speedo. I quadruple checked that everything was plugged all the way in and in the correct slots but still no go. Ultimately I had to send it back to BBC for replacement. Their customer service was excellent and they got me a new one out very quickly. Don't have any pics to post right now as I'm in the middle of a week-long trip. But everything has been working great! I'll post pics when I get back in San Diego

 

^this^

reconnect the lr harness and verify it all works. If it does then you have isolated the problem. No multimeter required.

painful lesson and the reason why i hooked up all the good and made that test vid. Just verification of working parts before final install.

 

thats what I'm gonna do

 

Cool. Double check your pinouts and connector assembly to make sure sure everything is tight and properly located. Check continuity of all wires on the BBC sub-harness. That should tell you what's wrong.

 

so I plug in a stick low rider harness and the speedo lights up. I double check we're the pins went in the speedo and they seem to be correct

 

I called bbc there gonna send me a new harness. Im gonna get the multi meter see I can find the problem tho since it's Friday and I won't see the harnes til the middle of next week

 

Both ends of the BBC harness are correct?

If so, that probably means a continuity problem. Bad crimp or crimp over insulation, broken wire, bad connector pin, etc.

 

yes both ends are correct! I didn't have time to do a continuity check, had to go run some errands

 

Since the gauge isn't even lighting up, your problem is very likely either the +12v or GND wire.

 

yeah I figured it was I'm gonna see if I can mess with it when I get home . I only had time to check the stock harness and double check the wires