Found strange box spliced in under dash

need RX7 · 04-13-2008, 01:50 AM

I was looking under the dash earlier and came across this weird box spliced into the wiring harness. it has 4 prongs on it and 3 wires going into it, one of the wires is connected to 2 of the prongs. Any idea what this is and why it's there? I'll try to take some better pics tomorrow when lighting is better.

The 3 wires that were cut look like they went into here before...

There is a small diagram on the front of it, I couldn't get a clear pic of it, but it looks like this:

Can I just take this off and solder the 3 wires back together? I know this is kind of a stupid question, but I want to be sure before I go messing with wiring and what not.
There's alot of ghetto wiring done on this car. I also found a plug to hook up to the lights on a trailer spliced into the taillight harness.

I also found a piece of gum, still in wrapper, behind the trim piece

J-Rat · 04-13-2008, 02:13 AM

Its a relay. Looks like it was wired to your CPU. Maybe part of an aftermarket alarm. Whatever you do DONT wire them all together... Burning wires will ensue.

RETed · 04-13-2008, 07:08 AM

Yep, it's an automotive Bosch or "Bosch-type" relay.
Since it goes into the "CPU", I'd imagine they were trying to get the hazards to flash for the alarm?

-Ted

04-13-2008, 01:50 AM	#1
need RX7 Clean S4 Nutswinger Join Date: Mar 2008 Location: Sterling Heights, MI Posts: 485 Rep Power: 18	Found strange box spliced in under dash I was looking under the dash earlier and came across this weird box spliced into the wiring harness. it has 4 prongs on it and 3 wires going into it, one of the wires is connected to 2 of the prongs. Any idea what this is and why it's there? I'll try to take some better pics tomorrow when lighting is better. The 3 wires that were cut look like they went into here before... There is a small diagram on the front of it, I couldn't get a clear pic of it, but it looks like this: Can I just take this off and solder the 3 wires back together? I know this is kind of a stupid question, but I want to be sure before I go messing with wiring and what not. There's alot of ghetto wiring done on this car. I also found a plug to hook up to the lights on a trailer spliced into the taillight harness. I also found a piece of gum, still in wrapper, behind the trim piece __________________ -Ted -1986 Mazda RX7 Sport [DD/beater]: engine finally let go at 205k. parts car status. -1986 Mazda RX7 base [resto-mod project]: S5 n/a swap in progress.

04-13-2008, 02:13 AM	#2
J-Rat Rotary Fan in Training Join Date: Mar 2008 Posts: 59 Rep Power: 18	Its a relay. Looks like it was wired to your CPU. Maybe part of an aftermarket alarm. Whatever you do DONT wire them all together... Burning wires will ensue. __________________ 1988 10th Anniversary 554 RWHP, 395 RW Torque 10.7 @ 126! owner: www.azrx7.com Engine built by ARIZONA ROTARY ROCKETS www.azrotaryrockets.com