What happens when the front relay box is upside down or sideways
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Hey guys -
My project car sat for some time with the front relay box unbolted and the box hanging upside-down by the wiring. Yesterday I was troubleshooting some problems, namely why the airpump didn't work and the headlights didn't pop up. Well, this is the reason :). Water runs into the relay box and into the relays, pooling inside and rusting them out. The relays are (obviously) not sealed. Some people mount the relay box sideways - this is also a bad idea. It really needs to be right side up to let any water drain properly and to keep the relays high and dry. Needless to say, I was surprised when I popped the cover off the relay. I was thinking maybe the contacts had some surface rust or something. As you can see, it was junk. I have been able to find some relays at the junkyard off other Mazdas, but some are either RX-7 specific or I just haven't found another Mazda with similar relays. Anyhow, thought this was interesting :). Dale |
I've seen this happen also when I cut my long relay box out completely and moved the essential 3 relays that I needed. I ended up making a bracket to hold them vertical and sealed them up.
Later |
great post as always:icon_tup:
I never knew turning the relay box upside down could be such a problem until the vmount. I had flippy headlights whenever it rains or after car wash. From other threads i realized a lot of people started having similar headlight problem after installing a IC kit and reloacating the relay box or moved it from its origintal position. causing water and/or moisture to get, rusting up in there. |
Did anyone ever come up with a solution for the relays getting wet? I currently have the front relay box installed upside down inside the front bumper because of my Greddy V Mount kit like in the picture below. Still, thanks to this Florida weather I am experiencing, my relay box keeps getting wet; thus, the TNS relay keeps getting wet, causing my lights to remain on and drain my battery and the flip up function not to work. When I got my car back from the shop, they forgot to install the relay cover, and they swear that it came in like that, but I couldn't prove otherwise, but anyways I have that working against me. I've gone through 4 TNS relays.
https://cimg9.ibsrv.net/gimg/www.rx7...7508285af7.jpg |
The instructions for the V-mount kit say to use caulking to seal around where the wires go into the relay box. You also REALLY need the lid, that does a LOT of the work. You should be able to track down a good used one.
There's a huge thread on the Greddy V-mount with a lot of tips and tricks, I'd suggest reading through that and see what others have done with the relay box. Dale |
With many intercooler setups the box gets relocated and it tends to collect water, causing all sorts of electrical gremlins. I drill a few holes in the cover so it can drain and pop apart the backing and seal with silicone as well as where the wires come in.
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I have the greddy v mount and I had problems with my TNS relay collecting water. Ended up extending the wiring and relocating the entire relay box into the airbox area.
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