1990 S13 KA24E Electrical issue

[burntricer]

hey all, i have no tail lights, like their there but not working.

i have checked all the fusesi have changed all the bulbsi have signal lights that workbrake lights DO NOT worki know i have power back there cuz my wiper works

also i have no gauge lighting, the gauges themselves work, just not the lighting.

any ideas? or things to look for

[burntricer]

i have now checked the TCM/deck install/gauge cluster pinouts

TCM is fineeither pin #20 or 11 (red with blue) has power

deck install is done right with proper connectors

does someone have a cover for the fuses? that specifies which are which, all my fuses are good but i would like to know which is which

[burntricer]

update

i have traced the wiring back to the tails and found that there is a short to ground on all the connectors. i have the TCU and the headlight switch disconnected and still nothing works...

[skylinekin]

I had similar problems, replacing the TCU with a good one fixed it.

[KASilvia90]

You check all the fuses behind the fuse panel located to the left of the clutch pedal (driver-side kick panel). I had the problem happen to me, i removed my a/t shifting unit and poorly taped the old wires, grounded to the 5-speed shift lever and lost all interior lights, rear lights and im thinking side markers and something up front, maybe the running ambers but signals worked. It labeled "instrument panel fuse" or something like that... Did you check every dual-function bulb associated in that circuit that isnt working now? sometimes a filamant will break and cross something and it can mess with the circuit.

[Madmax3]

Check the brake switch on the brake pedal, Cost $6-7 at Advanced and fixed my problem. Even if it looks good if you have never replaced it do yourself a favor and replace it.