Page 2 of 2
Re: Boost Gauge and other Dash gremlins
Posted: Sun Dec 14, 2025 2:43 pm
by Dare
Tom wrote: Sun Dec 14, 2025 2:32 pm
Yes, makes sense. The original engine harness has the flat black 8-pin connector that mated to the one left hanging in your car. When they swapped in the '86 ENGINE harness, they left in the '87 DASH harness, and didn't know how to deal with the wires in those mis-matched connectors, so just cut the wires and left them disconnected. You just patched an '87 dash harness to an '86 engine harness. Good job.
Or should I say, you patched part of it. The '86 engine harness doesn't have a hook up for the oil level sender, so if you want to get your car/dash to fully functional, you'll need to add your own wiring from the oil level sender (side of oil pan) to the appropriate wires left dangling from that flat black 8-pin dash harness connector.
Once again, Tom beat me to the punch!
I will add one minor thing: It's just one wire from the oil level sender to pin 8 on the black connector. So relatively simple to add if you go that route.
Re: Boost Gauge and other Dash gremlins
Posted: Sun Dec 14, 2025 4:00 pm
by shft22
Hmm, I wonder if the reason I have the general warning light on is because I am missing the oil level? Is there a way to bypass this for now? I don’t have any other light on.
Never mind, I google it and apparently all I have to do is ground that wire to disable the oil level function.
Re: Boost Gauge and other Dash gremlins
Posted: Mon Dec 15, 2025 7:20 am
by Tom
shft22 wrote: Sun Dec 14, 2025 4:00 pm
Hmm, I wonder if the reason I have the general warning light on is because I am missing the oil level? Is there a way to bypass this for now? I don’t have any other light on.
Never mind, I google it and apparently all I have to do is found that wire to disable the oil level function.
If it stays on after dealing with the oil sender, check the hand brake switch. A lot of times, the handle isn't able to engage the switch enough so you need to wiggle it and/or make sure it all the way down to get that light to go out.