I've wanted to do this mod for some time now. Very simply, the idea is to use a relay to raise/lower the window. This would limit the amount of electrical current flowing through the OE switches. Hopefully, the window will work better and the switches will last a lot longer. Good used window switches have gotten harder to find and expensive to buy.
I've seen aftermarket relay harnesses selling for $300... That's great I guess... If you want to spend that much money. I'm too cheap and there's no reason to spend that much.
First is coming up with a wiring diagram. It's a fairly simple circuit and I'm going to use one relay to raise and one relay to lower. I wanted it to be plug and play for the most part, or at least be able to unplug the relays and go back to the switches if a relay fails.
I sourced the relays on Amazon. They seemed to be the cheapest and I got them in 2 days. I bought 8 of them. They have a nice mounting tab on the top. This is the most expensive part of the mod.
Amazon.com: Metra Install E-123 Bay Tyco Relay 12 Volt 30 Amp Each: Car Electronics
These are SPDT relays. (Single Pole, Double Throw) 20/30 amp rating. The 20 amp rating is for the NO (Normally Open) position. This is the how the relay is rated when it isn't energized. The 30 amp rating is for when the relay is energized. Since the relay will carry current when energized and not energized, both ratings are important.
There's lots of cheap relays out there.. The ones to buy are the Tycos (formally Bosch). You can ID them by a couple things. First is they are marked TE on the top. Amp rating and voltage is there too. They are marked "Made in Portugal" on the side. Nobody makes these in the USA.
More to come....
I've seen aftermarket relay harnesses selling for $300... That's great I guess... If you want to spend that much money. I'm too cheap and there's no reason to spend that much.
First is coming up with a wiring diagram. It's a fairly simple circuit and I'm going to use one relay to raise and one relay to lower. I wanted it to be plug and play for the most part, or at least be able to unplug the relays and go back to the switches if a relay fails.
I sourced the relays on Amazon. They seemed to be the cheapest and I got them in 2 days. I bought 8 of them. They have a nice mounting tab on the top. This is the most expensive part of the mod.
Amazon.com: Metra Install E-123 Bay Tyco Relay 12 Volt 30 Amp Each: Car Electronics
These are SPDT relays. (Single Pole, Double Throw) 20/30 amp rating. The 20 amp rating is for the NO (Normally Open) position. This is the how the relay is rated when it isn't energized. The 30 amp rating is for when the relay is energized. Since the relay will carry current when energized and not energized, both ratings are important.
There's lots of cheap relays out there.. The ones to buy are the Tycos (formally Bosch). You can ID them by a couple things. First is they are marked TE on the top. Amp rating and voltage is there too. They are marked "Made in Portugal" on the side. Nobody makes these in the USA.
More to come....