91 ZR-1 Electrical issues
 

Hi
I hope everyone is well. I took my ZR-1 out today 1st time since Nov. Last time I drove it everything was fine. I noticed I left my glove box was open and I was expecting a dead battery.Car started right up but I noticed other things not working.
1. No courtesy lights, dome ,pillar etc. Light on rear view mirror does work. Turned dimmer switch but that didn't help.
2. Radio turns on looks normal, CD, radio all look normal but no sound, antenna won't go up.
3. Heat/AC controls nothing lit up. DEAD.
Everything else checked out on the car switch wise ,car ran great.
I checked all the fuses on passenger side fuse box, all ok, FUSE (1) 15 amp seems to control most of these items. I replaced even though it was fine. No luck. Checked AUX fuses on passenger side under hush panel , all fine.
I checked that door light switches were working, they read door ajar so I think that is not the issue. I did leave that glove box open for several weeks with trickle charger on.I read somewhere I could have burned out a relay some where. Any help would be appreciated
Thanks
Todd Cerami

Re: 91 ZR-1 Electrical issues
 

battery at 12.8, checked for codes and it came up with H25 "courtesy lamp relay circuit open or shorted to ground" gonna have to do some searching on this now, swapped courtesy lamp relay with the same type of relay from road lamps relay, no change.so that eliminates that.
what is best way to check them, run multimeter to one end and stick a pin in the wire going to rest of car and check for continuity? i don't want to tear into all of them there is about 6 or 7 .haven't got in there yet.
I checked the Courtesy fuse one more time ,even though I replaced it. I couldn't believe it but it was blown. I replaced it and everything works. Maybe me swapping relays did something? The relay that I swapped is working fine on the driver lights. Who knows just happy it's fixed.

Re: 91 ZR-1 Electrical issues
 

Glad you fixed it, I posted on your thread over in the Forum. The H25 is likely a history code from when the glove box lamp shorted. Clear it, and then see if it comes back...probably won't.