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The usual springtime startup ritual, actually two days ago, but a May 1st target. This is the first time I left the battery in the car, in a history dating back more than three decades, and used a battery maintainer instead. The car is stored in an unheated garage/shed six feet in the air on a lift. I still found a couple acorns, chewed, on the vents at the base of the windshield. The varmints must be ninja's 😁 Started and ran perfectly as there was no learning to be done like after a battery disconnect. One item did appear that will bear watching and that is brake fluid level. I have the larger Hydac accumulator purchased from Spinning Wheels several years ago and it does drop the fluid level in the reservoir more than the standard amount. I noted the level was a little low at startup but everything was normal for the first mile or so, then the red brake light came on. Tried the parking brake, that's not it. Checked the brake feel and if the pump ran, all okay, but the level was much lower in the reservoir than I have seen before. I tried rapidly pumping the brakes to deplete the accumulator and the light went out, indicating to me that the low level warning light was the cause for the warning. This has not been a problem in the past but I suspect as the accumulator ages, and greater fluid is required to fill it, the actual fluid level will become more important. From a topped off level to fully pressurized, the fluid level will drop from the top of the level tag to just below it, so the capacity is substantial. I guess it is time to bring out the test rig and estimate the gas precharge and health of the accumulator. Oh joy👍

ICM (Ignition Control Module) Ignition coils ECM (Engine Control Module) MAF sensor (Mass Air Flow) CPS (Central Power Supply) Generator (alternator) Drive belt tensioner Fuel pump, strainer, & deflector Oil pressure sensor Rear struts (if you have $$$)

Makes sense, appreciate the feedback. I figured since there's a lot of things that could be related together it would help to keep it together. I'll try to break it down into at least related pieces. Thanks Ronnie!

Welcome. It looks like you have quite a job in front of you. Regarding photos; it sometimes helps to have a general overall photo with locations noted as well as the detail photos. I am just speaking for myself, but I do not have color codes and wiring configurations committed to memory🥴. That said, a couple of things are obvious and that is the area of the brake system in the engine bay has been converted to some sort of standard type brakes. The original anti-lock system is missing and the photo of the cluster of harness plugs is what used to plug into the motor and anti-lock module. You will probably have multiple warning lights related to brakes. I see the corner of what appears to be a cone type air inlet filter, and the sensor out in the open is probably the inlet air temperature, which is installed in the stock air filter housing. I do not know what is being referred to as an aftermarket MAF, but the photo appears to be the stock style setup with the protective loom covering missing from the last portion of the harness to the plug.