Few Q's, Wiring + Plugs Heater Core Box, Fuel Gauge

[wartex11]

Car - AE86

motor - 4AGE

use - Daily

problem -

Hi,

Just got my 86 and in the process of getting it registered in WA, I am reinstalling the heater core/box interior bits and have a few questions.



1. There is a white plug (see above (bottom of picture)) in the back of the heater core box and I found the relevant plug on the engine(/body?) loom but it plugs in both ways with no indication which direction is correct. The other green plug (as seen in the picture below) can only be plugged in 1 direction. Um question is whether there is a proper direction for this.



2. Also regarding that picture, my relays are inside the compartment due to the previous owners wiring, and I'm not sure if that brown wire came off one of the tabs for ground of another relay and I accidentally pulled it off the ground? Possible to tell from just this picture before I take it to my mechanic?

3. Fuel gauge stopped working after I filled up a full tank of fuel, was working (on 1/4) before. Where should I start to diagnose this?

4. When I had my dash out was checking the bulbs behind the dash and found one to be blown, bulb size 74 aka T5. Went to get a new bulb but they asked me what wattage it is??? I only know that a car is 12-14V. Can someone tell me what the wattage is for the cluster bulbs? I have searched all the manuals available here and AEU/club4ag

occurs/started when - Installing heater box/core/system

personal situation - ????

Thanks